diff --git a/src/actions/tutorialActions.js b/src/actions/tutorialActions.js
new file mode 100644
index 0000000..dd0a5d4
--- /dev/null
+++ b/src/actions/tutorialActions.js
@@ -0,0 +1,24 @@
+import { TUTORIAL_SUCCESS, TUTORIAL_ERROR, TUTORIAL_CHANGE } from './types';
+
+import { tutorials } from '../components/Tutorial/tutorials';
+
+export const tutorialChange = () => (dispatch) => {
+  dispatch({
+    type: TUTORIAL_CHANGE
+  });
+};
+
+export const tutorialCheck = (id, status) => (dispatch, getState) => {
+  var tutorialsStatus = getState().tutorial.status ?
+                          getState().tutorial.status
+                        : new Array(tutorials.length).fill({});
+  tutorialsStatus[id].status = status;
+  console.log(tutorials);
+  dispatch({
+    type: status === 'success' ? TUTORIAL_SUCCESS : TUTORIAL_ERROR,
+    payload: tutorialsStatus
+  });
+  dispatch(tutorialChange());
+  // update locale storage - sync with redux store
+  window.localStorage.setItem('tutorial', JSON.stringify(tutorialsStatus));
+};
diff --git a/src/actions/types.js b/src/actions/types.js
index c0be6c2..28e5e33 100644
--- a/src/actions/types.js
+++ b/src/actions/types.js
@@ -5,3 +5,8 @@ export const MOVE_BLOCK = 'MOVE_BLOCK';
 export const CHANGE_BLOCK = 'CHANGE_BLOCK';
 export const DELETE_BLOCK = 'DELETE_BLOCK';
 export const CLEAR_STATS = 'CLEAR_STATS';
+
+
+export const TUTORIAL_SUCCESS = 'TUTORIAL_SUCCESS';
+export const TUTORIAL_ERROR = 'TUTORIAL_ERROR';
+export const TUTORIAL_CHANGE = 'TUTORIAL_CHANGE';
diff --git a/src/components/Compile.js b/src/components/Compile.js
index 1d0f15c..a6c86c2 100644
--- a/src/components/Compile.js
+++ b/src/components/Compile.js
@@ -62,7 +62,7 @@ class Compile extends Component {
     return (
       <div style={{display: 'inline'}}>
         <Button style={{ float: 'right', color: 'white' }} variant="contained" color="primary" onClick={() => this.compile()}>
-          Compile
+          Kompilieren
         </Button>
         <Backdrop className={this.props.classes.backdrop} open={this.state.progress}>
           <CircularProgress color="inherit" />
@@ -70,7 +70,7 @@ class Compile extends Component {
         <Dialog onClose={this.toggleDialog} open={this.state.open}>
           <DialogTitle>Fehler</DialogTitle>
           <DialogContent dividers>
-            Etwas ist beim Compilieren schief gelaufen. Versuche es nochmal.
+            Etwas ist beim Kompilieren schief gelaufen. Versuche es nochmal.
           </DialogContent>
           <DialogActions>
             <Button onClick={this.toggleDialog} color="primary">
diff --git a/src/components/Tutorial/SolutionCheck.js b/src/components/Tutorial/SolutionCheck.js
new file mode 100644
index 0000000..01a9380
--- /dev/null
+++ b/src/components/Tutorial/SolutionCheck.js
@@ -0,0 +1,106 @@
+import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
+import { tutorialCheck } from '../../actions/tutorialActions';
+
+import * as Blockly from 'blockly/core';
+
+import Compile from '../Compile';
+
+import { tutorials } from './tutorials';
+
+import { withRouter } from 'react-router-dom';
+
+import { withStyles } from '@material-ui/core/styles';
+import IconButton from '@material-ui/core/IconButton';
+import Tooltip from '@material-ui/core/Tooltip';
+import Button from '@material-ui/core/Button';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogActions from '@material-ui/core/DialogActions';
+import Dialog from '@material-ui/core/Dialog';
+import { faPlay } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+
+const styles = (theme) => ({
+  compile: {
+    backgroundColor: theme.palette.primary.main,
+    color: theme.palette.primary.contrastText,
+    '&:hover': {
+      backgroundColor: theme.palette.primary.main,
+      color: theme.palette.primary.contrastText,
+    }
+  }
+});
+
+class SolutionCheck extends Component {
+
+  state={
+    open: false,
+    msg: ''
+  }
+
+  toggleDialog = () => {
+    if(this.state.open){
+      this.setState({ open: false, msg: '' });
+    }
+    else{
+      this.setState({ open: !this.state });
+    }
+  }
+
+  check = () => {
+    const workspace = Blockly.getMainWorkspace();
+    var msg = tutorials[this.props.tutorial].test(workspace);
+    this.props.tutorialCheck(this.props.tutorial, msg.type);
+    this.setState({ msg, open: true });
+  }
+
+  render() {
+    return (
+      tutorials[this.props.tutorial].test ?
+      <div>
+        <Tooltip title='Lösung kontrollieren'>
+          <IconButton
+            className={this.props.classes.compile}
+            style={{width: '40px', height: '40px', position: 'absolute', top: 8, right: 8, zIndex: 21 }}
+            onClick={() => this.check()}
+          >
+            <FontAwesomeIcon icon={faPlay} size="xs"/>
+          </IconButton>
+        </Tooltip>
+        <Dialog fullWidth maxWidth={'sm'} onClose={this.toggleDialog} open={this.state.open} style={{zIndex: 9999999}}>
+          <DialogTitle>{this.state.msg.type === 'error' ? 'Fehler' : 'Erfolg'}</DialogTitle>
+          <DialogContent dividers>
+            {this.state.msg.text}
+            {this.state.msg.type === 'success' ?
+            <div style={{marginTop: '20px', display: 'flex'}}>
+              <Compile />
+              <Button
+                style={{marginLeft: '10px'}}
+                variant="contained"
+                color="primary"
+                onClick={() => {this.toggleDialog(); this.props.history.push(`/tutorial/${this.props.tutorial+2}`)}}
+              >
+                nächstes Tutorial
+              </Button>
+              </div>
+            : null}
+          </DialogContent>
+          <DialogActions>
+            <Button onClick={this.toggleDialog} color="primary">
+              Schließen
+            </Button>
+          </DialogActions>
+        </Dialog>
+      </div>
+      : null
+    );
+  };
+}
+
+SolutionCheck.propTypes = {
+  tutorialCheck: PropTypes.func.isRequired
+};
+
+export default connect(null, { tutorialCheck })(withRouter(withStyles(styles, {withTheme: true})(SolutionCheck)));
diff --git a/src/components/Tutorial/StepperHorizontal.js b/src/components/Tutorial/StepperHorizontal.js
index 510d326..7197103 100644
--- a/src/components/Tutorial/StepperHorizontal.js
+++ b/src/components/Tutorial/StepperHorizontal.js
@@ -1,8 +1,12 @@
 import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
 
 import { withRouter } from 'react-router-dom';
 
-import tutorials from './tutorials.json';
+import clsx from 'clsx';
+
+import { tutorials } from './tutorials';
 
 import { fade } from '@material-ui/core/styles/colorManipulator';
 import { withStyles } from '@material-ui/core/styles';
@@ -11,9 +15,11 @@ import Stepper from '@material-ui/core/Stepper';
 import Step from '@material-ui/core/Step';
 import StepLabel from '@material-ui/core/StepLabel';
 
+import { faCheck, faTimes } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+
 const styles = (theme) => ({
   stepper: {
-    backgroundColor: fade(theme.palette.primary.main, 0.6),
     width: 'calc(100% - 40px)',
     borderRadius: '25px',
     padding: '0 20px',
@@ -21,8 +27,23 @@ const styles = (theme) => ({
     display: 'flex',
     justifyContent: 'space-between'
   },
+  stepperSuccess: {
+    backgroundColor: fade(theme.palette.primary.main, 0.6),
+  },
+  stepperError: {
+    backgroundColor: fade(theme.palette.error.dark, 0.6),
+  },
+  stepperOther: {
+    backgroundColor: fade(theme.palette.secondary.main, 0.6),
+  },
   color: {
     backgroundColor: 'transparent '
+  },
+  iconDivSuccess: {
+    color: theme.palette.primary.main
+  },
+  iconDivError: {
+    color: theme.palette.error.dark
   }
 });
 
@@ -40,8 +61,10 @@ class StepperHorizontal extends Component {
 
   render() {
     var tutorialId = this.state.tutorialId;
+    var tutorialStatus = this.props.status[tutorialId-1].status === 'success' ? 'Success' :
+                          this.props.status[tutorialId-1].status === 'error' ? 'Error' : 'Other';
     return (
-      <div className={this.props.classes.stepper}>
+      <div className={clsx(this.props.classes.stepper, this.props.classes['stepper'+tutorialStatus])}>
         <Button
           disabled={tutorialId-1 === 0}
           onClick={() => {this.props.history.push(`/tutorial/${tutorialId-1}`)}}
@@ -51,7 +74,7 @@ class StepperHorizontal extends Component {
         <Stepper activeStep={tutorialId} orientation="horizontal"
                  style={{padding: 0}} classes={{root: this.props.classes.color}}>
           <Step expanded completed={false}>
-            <StepLabel icon={``}>
+            <StepLabel icon={tutorialStatus !== 'Other' ? <div className={clsx(tutorialStatus === 'Error' ? this.props.classes.iconDivError: this.props.classes.iconDivSuccess)}><FontAwesomeIcon className={this.props.classes.icon} icon={tutorialStatus === 'Success' ? faCheck : faTimes}/></div> : ''}>
               <h1 style={{margin: 0}}>{tutorials[tutorialId-1].title}</h1>
             </StepLabel>
           </Step>
@@ -67,4 +90,14 @@ class StepperHorizontal extends Component {
   };
 }
 
-export default withRouter(withStyles(styles, {withTheme: true})(StepperHorizontal));
+StepperHorizontal.propTypes = {
+  status: PropTypes.array.isRequired,
+  change: PropTypes.number.isRequired,
+};
+
+const mapStateToProps = state => ({
+  change: state.tutorial.change,
+  status: state.tutorial.status
+});
+
+export default connect(mapStateToProps, null)(withRouter(withStyles(styles, {withTheme: true})(StepperHorizontal)));
diff --git a/src/components/Tutorial/StepperVertical.js b/src/components/Tutorial/StepperVertical.js
index 7d89bb8..48ea972 100644
--- a/src/components/Tutorial/StepperVertical.js
+++ b/src/components/Tutorial/StepperVertical.js
@@ -1,10 +1,12 @@
 import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
 
 import { withRouter, Link } from 'react-router-dom';
 
 import clsx from 'clsx';
 
-import tutorials from './tutorials.json';
+import { tutorials } from './tutorials';
 
 import { fade } from '@material-ui/core/styles/colorManipulator';
 import { withStyles } from '@material-ui/core/styles';
@@ -20,33 +22,44 @@ const styles = (theme) => ({
     padding: 0,
     width: '30px',
   },
-  stepIconSmall: {
-    border: `2px solid ${theme.palette.primary.main}`,
+  stepIcon: {
+    borderStyle: `solid`,
+    borderWith: '2px',
     borderRadius: '50%',
     width: '12px',
     height: '12px',
     margin: '0 auto'
   },
   stepIconMedium: {
-    border: `2px solid ${theme.palette.primary.main}`,
-    borderRadius: '50%',
     width: '18px',
     height: '18px',
-    margin: '0 auto'
   },
   stepIconLarge: {
-    border: `2px solid ${theme.palette.primary.main}`,
-    borderRadius: '50%',
     width: '24px',
     height: '24px'
   },
   stepIconTransparent: {
-    border: `2px solid transparent`,
+    borderColor: `transparent`,
     cursor: 'default'
   },
-  stepIconActive: {
+  stepIconSuccess: {
+    borderColor: theme.palette.primary.main,
+  },
+  stepIconError: {
+    borderColor: theme.palette.error.dark,
+  },
+  stepIconOther: {
+    borderColor: theme.palette.secondary.main,
+  },
+  stepIconActiveSuccess: {
     backgroundColor: fade(theme.palette.primary.main, 0.6)
   },
+  stepIconActiveError: {
+    backgroundColor: fade(theme.palette.error.dark, 0.6)
+  },
+  stepIconActiveOther: {
+    backgroundColor: fade(theme.palette.secondary.main, 0.6)
+  },
   progress: {
     position: 'absolute',
     top: 0,
@@ -76,7 +89,7 @@ class StepperVertical extends Component {
                                   tutorials.slice(Number(this.props.match.params.tutorialId)-3-1, Number(this.props.match.params.tutorialId)+3)
                                 : tutorials.slice(Number(this.props.match.params.tutorialId)-2-1,Number(this.props.match.params.tutorialId)+2),
     tutorialId: Number(this.props.match.params.tutorialId),
-    verticalTutorialId: Number(this.props.match.params.tutorialId)
+    selectedVerticalTutorialId: Number(this.props.match.params.tutorialId)
   }
 
   componentDidUpdate(props, state){
@@ -92,13 +105,13 @@ class StepperVertical extends Component {
                                       tutorials.slice(Number(this.props.match.params.tutorialId)-3-1, Number(this.props.match.params.tutorialId)+3)
                                     : tutorials.slice(Number(this.props.match.params.tutorialId)-2-1,Number(this.props.match.params.tutorialId)+2),
         tutorialId: Number(this.props.match.params.tutorialId),
-        verticalTutorialId: Number(this.props.match.params.tutorialId)
+        selectedVerticalTutorialId: Number(this.props.match.params.tutorialId)
       })
     }
   }
 
   verticalStepper = (step) => {
-    var newTutorialId = this.state.verticalTutorialId + step;
+    var newTutorialId = this.state.selectedVerticalTutorialId + step;
     var tutorialArray = Number(newTutorialId) === 1 ?
                           tutorials.slice(newTutorialId-1, newTutorialId+4)
                           : newTutorialId === 2 ?
@@ -108,31 +121,31 @@ class StepperVertical extends Component {
                                   : newTutorialId === tutorials.length-1 ?
                                         tutorials.slice(newTutorialId-3-1, newTutorialId+3)
                                       : tutorials.slice(newTutorialId-2-1, newTutorialId+2);
-    this.setState({ tutorialArray: tutorialArray, verticalTutorialId: newTutorialId });
+    this.setState({ tutorialArray: tutorialArray, selectedVerticalTutorialId: newTutorialId });
   }
 
   render() {
     var tutorialId = this.state.tutorialId;
-    var verticalTutorialId = this.state.verticalTutorialId;
+    var selectedVerticalTutorialId = this.state.selectedVerticalTutorialId;
     return (
       isWidthUp('sm', this.props.width) ?
         <div style={{marginRight: '10px'}}>
             <Button
               style={{minWidth: '30px', margin: 'auto', minHeight: '25px', padding: '0', writingMode: 'vertical-rl'}}
-              disabled={this.state.verticalTutorialId === 1}
+              disabled={this.state.selectedVerticalTutorialId === 1}
               onClick={() => {this.verticalStepper(-1)}}
             >
               {'<'}
             </Button>
-            <div style={{display: 'flex', height: 'calc(100% - 25px - 25px)', width: 'max-content'}}>
+            <div style={{display: 'flex', height: 'max-content', width: 'max-content'}}>
               <div style={{position: 'relative'}}>
                 <div
                   className={clsx(this.props.classes.progress, this.props.classes.progressForeground)}
-                  style={{ zIndex: 1, borderRadius: `${verticalTutorialId/tutorials.length === 1 ? '2px' : '2px 2px 0 0'}`, height: `${(verticalTutorialId/tutorials.length)*100}%`}}>
+                  style={{ zIndex: 1, borderRadius: `${selectedVerticalTutorialId/tutorials.length === 1 ? '2px' : '2px 2px 0 0'}`, height: `${(selectedVerticalTutorialId/tutorials.length)*100}%`}}>
                 </div>
                 <div
                   className={clsx(this.props.classes.progress, this.props.classes.progressBackground)}
-                  style={{borderRadius: `${verticalTutorialId/tutorials.length === 1 ? '2px' : '2px 2px 0 0'}`}}>
+                  style={{borderRadius: `${selectedVerticalTutorialId/tutorials.length === 1 ? '2px' : '2px 2px 0 0'}`}}>
                 </div>
               </div>
               <Stepper
@@ -142,25 +155,28 @@ class StepperVertical extends Component {
                 classes={{root: this.props.classes.verticalStepper}}
               >
                 {this.state.tutorialArray.map((tutorial, i) => {
-                  var index = this.state.tutorialArray.indexOf(tutorials[verticalTutorialId-1]);
+                  var index = this.state.tutorialArray.indexOf(tutorials[selectedVerticalTutorialId-1]);
+                  var verticalTutorialId = i === index ? selectedVerticalTutorialId : selectedVerticalTutorialId - index + i;
+                  var tutorialStatus = this.props.status[verticalTutorialId-1].status === 'success' ? 'Success' :
+                                        this.props.status[verticalTutorialId-1].status === 'error' ? 'Error' : 'Other';
                   return (
                     <Step key={i}>
                       <Tooltip title={Object.keys(tutorial).length > 0 ? tutorial.title : ''} placement='right' arrow >
-                        <Link to={`/tutorial/${i === index ? verticalTutorialId : verticalTutorialId - index + i}`}>
+                        <Link to={`/tutorial/${verticalTutorialId}`}>
                           <StepLabel
                             StepIconComponent={'div'}
                             classes={{
-                              root: tutorial === tutorials[verticalTutorialId-1] ?
+                              root: tutorial === tutorials[selectedVerticalTutorialId-1] ?
                                       tutorial === tutorials[tutorialId-1] ?
-                                        clsx(this.props.classes.stepIconLarge, this.props.classes.stepIconActive)
-                                      : this.props.classes.stepIconLarge
-                                    : tutorial === tutorials[verticalTutorialId-2] || tutorial === tutorials[verticalTutorialId] ?
+                                         clsx(this.props.classes.stepIcon, this.props.classes.stepIconLarge, this.props.classes['stepIcon'+tutorialStatus], this.props.classes['stepIconActive'+tutorialStatus])
+                                      : clsx(this.props.classes.stepIcon, this.props.classes.stepIconLarge, this.props.classes['stepIcon'+tutorialStatus])
+                                    : tutorial === tutorials[verticalTutorialId-2] || tutorial === tutorials[selectedVerticalTutorialId] ?
                                         tutorial === tutorials[tutorialId-1] ?
-                                          clsx(this.props.classes.stepIconMedium, this.props.classes.stepIconActive)
-                                        : this.props.classes.stepIconMedium
+                                          clsx(this.props.classes.stepIcon, this.props.classes.stepIconMedium, this.props.classes['stepIcon'+tutorialStatus], this.props.classes['stepIconActive'+tutorialStatus])
+                                        : clsx(this.props.classes.stepIcon, this.props.classes.stepIconMedium, this.props.classes['stepIcon'+tutorialStatus])
                                     : tutorial === tutorials[tutorialId-1] ?
-                                        clsx(this.props.classes.stepIconSmall, this.props.classes.stepIconActive)
-                                      : this.props.classes.stepIconSmall
+                                        clsx(this.props.classes.stepIcon, this.props.classes['stepIcon'+tutorialStatus], this.props.classes['stepIconActive'+tutorialStatus])
+                                      : clsx(this.props.classes.stepIcon, this.props.classes['stepIcon'+tutorialStatus])
                             }}
                           >
                           </StepLabel>
@@ -172,7 +188,7 @@ class StepperVertical extends Component {
             </div>
             <Button
               style={{minWidth: '30px', minHeight: '25px', padding: '0', writingMode: 'vertical-rl'}}
-              disabled={this.state.verticalTutorialId === tutorials.length}
+              disabled={this.state.selectedVerticalTutorialId === tutorials.length}
               onClick={() => {this.verticalStepper(1)}}
             >
               {'>'}
@@ -183,4 +199,15 @@ class StepperVertical extends Component {
   };
 }
 
-export default withRouter(withStyles(styles, {withTheme: true})(withWidth()(StepperVertical)));
+
+StepperVertical.propTypes = {
+  status: PropTypes.array.isRequired,
+  change: PropTypes.number.isRequired,
+};
+
+const mapStateToProps = state => ({
+  change: state.tutorial.change,
+  status: state.tutorial.status
+});
+
+export default connect(mapStateToProps, null)(withRouter(withStyles(styles, {withTheme: true})(withWidth()(StepperVertical))));
diff --git a/src/components/Tutorial/Tutorial.js b/src/components/Tutorial/Tutorial.js
index 7a2ccf0..d3fb08b 100644
--- a/src/components/Tutorial/Tutorial.js
+++ b/src/components/Tutorial/Tutorial.js
@@ -4,10 +4,11 @@ import Breadcrumbs from '../Breadcrumbs';
 import StepperHorizontal from './StepperHorizontal';
 import StepperVertical from './StepperVertical';
 import BlocklyWindow from '../Blockly/BlocklyWindow';
+import SolutionCheck from './SolutionCheck';
 import CodeViewer from '../CodeViewer';
 import NotFound from '../NotFound';
 
-import tutorials from './tutorials.json';
+import { tutorials } from './tutorials';
 
 import withWidth, { isWidthUp } from '@material-ui/core/withWidth';
 import Tabs from '@material-ui/core/Tabs';
@@ -24,7 +25,7 @@ class Tutorial extends Component {
 
   componentDidUpdate(props, state){
     if(state.tutorialId !== Number(this.props.match.params.tutorialId)){
-      this.setState({tutorialId: Number(this.props.match.params.tutorialId)})
+      this.setState({ value: 'introduction', tutorialId: Number(this.props.match.params.tutorialId) });
     }
   }
 
@@ -65,7 +66,8 @@ class Tutorial extends Component {
                   'Hier könnte eine Anleitung stehen.': null }
                 {this.state.value === 'assessment' ?
                   <Grid container spacing={2}>
-                    <Grid item xs={12} md={6} lg={8}>
+                    <Grid item xs={12} md={6} lg={8} style={{ position: 'relative' }}>
+                      <SolutionCheck tutorial={tutorialId-1}/>
                       <BlocklyWindow />
                     </Grid>
                     <Grid item xs={12} md={6} lg={4}>
diff --git a/src/components/Tutorial/TutorialHome.js b/src/components/Tutorial/TutorialHome.js
index 323f5f1..c00dc08 100644
--- a/src/components/Tutorial/TutorialHome.js
+++ b/src/components/Tutorial/TutorialHome.js
@@ -1,15 +1,52 @@
 import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
+
+import clsx from 'clsx';
 
 import Breadcrumbs from '../Breadcrumbs';
 
-import tutorials from './tutorials.json';
+import { tutorials } from './tutorials';
 
 import { Link } from 'react-router-dom';
 
+import { fade } from '@material-ui/core/styles/colorManipulator';
+import { withStyles } from '@material-ui/core/styles';
 import Grid from '@material-ui/core/Grid';
 import Paper from '@material-ui/core/Paper';
 
+import { faCheck, faTimes } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+
+const styles = (theme) => ({
+  outerDiv: {
+    position: 'absolute',
+    right: '-29px',
+    bottom: '-29px',
+    width: '140px',
+    height: '140px',
+    borderStyle: 'solid',
+    borderWidth: '10px',
+    borderRadius: '50%',
+    borderColor: fade(theme.palette.primary.main, 0.2),
+    color: fade(theme.palette.primary.main, 0.2)
+  },
+  outerDivError: {
+    borderColor: fade(theme.palette.error.dark, 0.2),
+    color: fade(theme.palette.error.dark, 0.2)
+  },
+  innerDiv: {
+    width: 'inherit',
+    height: 'inherit',
+    display: 'table-cell',
+    verticalAlign: 'middle',
+    textAlign: 'center'
+  }
+});
+
+
 class TutorialHome extends Component {
+
   render() {
     return (
       <div>
@@ -17,17 +54,41 @@ class TutorialHome extends Component {
 
         <h1>Tutorial-Übersicht</h1>
         <Grid container spacing={2}>
-          {tutorials.map((tutorial, i) => (
-            <Grid item xs={12} sm={6} md={4} xl={3} key={i}>
-              <Link to={`/tutorial/${i+1}`} style={{textDecoration: 'none', color: 'inherit'}}>
-                <Paper style={{height: '150px', padding: '10px'}}>{tutorials[i].title}</Paper>
-              </Link>
-            </Grid>
-          ))}
+          {tutorials.map((tutorial, i) => {
+            var tutorialStatus = this.props.status[i].status === 'success' ? 'Success' :
+                                  this.props.status[i].status === 'error' ? 'Error' : 'Other';
+            return (
+              <Grid item xs={12} sm={6} md={4} xl={3} key={i} style={{}}>
+                <Link to={`/tutorial/${i+1}`} style={{textDecoration: 'none', color: 'inherit'}}>
+                  <Paper style={{height: '150px', padding: '10px', position:'relative', overflow: 'hidden'}}>
+                    {tutorials[i].title}
+                    {tutorialStatus !== 'Other' ?
+                      <div className={clsx(this.props.classes.outerDiv, tutorialStatus === 'Error' ? this.props.classes.outerDivError : null)}>
+                        <div className={this.props.classes.innerDiv}>
+                          <FontAwesomeIcon size='4x' icon={tutorialStatus === 'Success' ? faCheck : faTimes}/>
+                        </div>
+                      </div>
+                      : null
+                    }
+                  </Paper>
+                </Link>
+
+              </Grid>
+          )})}
         </Grid>
       </div>
     );
   };
 }
 
-export default TutorialHome;
+TutorialHome.propTypes = {
+  status: PropTypes.array.isRequired,
+  change: PropTypes.number.isRequired,
+};
+
+const mapStateToProps = state => ({
+  change: state.tutorial.change,
+  status: state.tutorial.status
+});
+
+export default connect(mapStateToProps, null)(withStyles(styles, {withTheme: true})(TutorialHome));
diff --git a/src/components/Tutorial/tutorials.js b/src/components/Tutorial/tutorials.js
new file mode 100644
index 0000000..d2d2a38
--- /dev/null
+++ b/src/components/Tutorial/tutorials.js
@@ -0,0 +1,130 @@
+export const tutorials = [
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "WLAN",
+    "test": function(workspace){
+              var wifi = workspace.getBlocksByType('sensebox_wifi'); // result is an array with Blocks as objects
+              if(wifi.length > 0){
+                var wifiBlock = wifi[wifi.length-1] // first block is probably overwritten
+                if(wifiBlock.getRootBlock().type === 'sensebox_wifi'){
+                  return {text: 'Block, um eine WLAN-Verbindung herzustellen, ist nicht verbunden.', type: 'error'}
+                }
+                if(!wifiBlock.getFieldValue('SSID')){
+                  return {text: 'Die SSID-Angabe fehlt.', type: 'error'}
+                }
+                if(!wifiBlock.getFieldValue('Password')){
+                  return {text: 'Die Angabe des Passworts fehlt.', type: 'error'}
+                }
+                return {text: 'Super. Alles richtig!', type: 'success'}
+              }
+              else {
+                return {text: 'Der Block, um eine WLAN-Verbindung herzustellen, fehlt.', type: 'error'}
+              }
+            }
+  },
+  {
+    "title": "spezifisches WLAN",
+    "test": function(workspace){
+              var wifi = workspace.getBlocksByType('sensebox_wifi'); // result is an array with Blocks as objects
+              if(wifi.length > 0){
+                var wifiBlock = wifi[wifi.length-1] // first block is probably overwritten
+                if(wifiBlock.getRootBlock().type === 'sensebox_wifi'){
+                  return {text: 'Block, um eine WLAN-Verbindung herzustellen, ist nicht verbunden.', type: 'error'}
+                }
+                var ssid = wifiBlock.getFieldValue('SSID');
+                if(ssid){
+                  if(ssid !== 'SSID'){
+                    return {text: 'SSID muss als Angabe "SSID" haben.', type: 'error'}
+                  }
+                }
+                else{
+                  return {text: 'Die SSID-Angabe fehlt.', type: 'error'}
+                }
+                var password = wifiBlock.getFieldValue('Password')
+                if(password){
+                  if(password !== 'Passwort'){
+                    return {text: 'Password muss als Angabe "Passwort" haben.', type: 'error'}
+                  }
+                }
+                else{
+                  return {text: 'Die Angabe des Passworts fehlt.', type: 'error'}
+                }
+                return {text: 'Super. Alles richtig!', type: 'success'}
+              }
+              else {
+                return {text: 'Der Block, um eine WLAN-Verbindung herzustellen, fehlt.', type: 'error'}
+              }
+            }
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  },
+  {
+    "title": "erste Schritte"
+  },
+  {
+    "title": "if-Bedingung"
+  },
+  {
+    "title": "for-Schleife"
+  }
+]
diff --git a/src/components/Tutorial/tutorials.json b/src/components/Tutorial/tutorials.json
deleted file mode 100644
index 04cf6cc..0000000
--- a/src/components/Tutorial/tutorials.json
+++ /dev/null
@@ -1,74 +0,0 @@
-[
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  },
-  {
-    "title": "erste Schritte"
-  },
-  {
-    "title": "if-Bedingung"
-  },
-  {
-    "title": "for-Schleife"
-  }
-]
diff --git a/src/reducers/index.js b/src/reducers/index.js
index de9944c..f8ec289 100644
--- a/src/reducers/index.js
+++ b/src/reducers/index.js
@@ -1,6 +1,8 @@
 import { combineReducers } from 'redux';
 import workspaceReducer from './workspaceReducer';
+import tutorialReducer from './tutorialReducer';
 
 export default combineReducers({
-  workspace: workspaceReducer
+  workspace: workspaceReducer,
+  tutorial: tutorialReducer
 });
diff --git a/src/reducers/tutorialReducer.js b/src/reducers/tutorialReducer.js
new file mode 100644
index 0000000..327615c
--- /dev/null
+++ b/src/reducers/tutorialReducer.js
@@ -0,0 +1,25 @@
+import { TUTORIAL_SUCCESS, TUTORIAL_ERROR, TUTORIAL_CHANGE } from '../actions/types';
+
+
+const initialState = {
+  status: JSON.parse(window.localStorage.getItem('tutorial')),
+  change: 0
+};
+
+export default function(state = initialState, action){
+  switch(action.type){
+    case TUTORIAL_SUCCESS:
+    case TUTORIAL_ERROR:
+      return {
+        ...state,
+        status: action.payload
+      };
+    case TUTORIAL_CHANGE:
+      return {
+        ...state,
+        change: state.change += 1
+      }
+    default:
+      return state;
+  }
+}