diff --git a/src/actions/tutorialBuilderActions.js b/src/actions/tutorialBuilderActions.js
index 4cfee80..03f7662 100644
--- a/src/actions/tutorialBuilderActions.js
+++ b/src/actions/tutorialBuilderActions.js
@@ -1,4 +1,4 @@
-import { BUILDER_CHANGE, BUILDER_ERROR, BUILDER_TITLE, BUILDER_ID, BUILDER_ADD_STEP, BUILDER_DELETE_STEP, BUILDER_CHANGE_STEP, BUILDER_CHANGE_ORDER, BUILDER_DELETE_PROPERTY } from './types';
+import { PROGRESS, BUILDER_CHANGE, BUILDER_ERROR, BUILDER_TITLE, BUILDER_ID, BUILDER_ADD_STEP, BUILDER_DELETE_STEP, BUILDER_CHANGE_STEP, BUILDER_CHANGE_ORDER, BUILDER_DELETE_PROPERTY } from './types';
 
 export const changeTutorialBuilder = () => (dispatch) => {
   dispatch({
@@ -14,6 +14,14 @@ export const tutorialTitle = (title) => (dispatch) => {
   dispatch(changeTutorialBuilder());
 };
 
+export const tutorialSteps = (steps) => (dispatch) => {
+  dispatch({
+    type: BUILDER_ADD_STEP,
+    payload: steps
+  });
+  dispatch(changeTutorialBuilder());
+};
+
 export const tutorialId = (id) => (dispatch) => {
   dispatch({
     type: BUILDER_ID,
@@ -116,7 +124,6 @@ export const changeErrorStepIndex = (fromIndex, toIndex) => (dispatch, getState)
 
 export const setError = (index, property) => (dispatch, getState) => {
   var error = getState().builder.error;
-  console.log(index);
   if(index !== undefined){
     error.steps[index][property] = true;
   }
@@ -147,21 +154,21 @@ export const deleteError = (index, property) => (dispatch, getState) => {
 
 export const setSubmitError = () => (dispatch, getState) => {
   var builder = getState().builder;
-  if(builder.id === ''){
+  if(builder.id === undefined || builder.id === ''){
     dispatch(setError(undefined, 'id'));
   }
-  if(builder.title === ''){
+  if(builder.id === undefined || builder.title === ''){
     dispatch(setError(undefined, 'title'));
   }
   for(var i = 0; i < builder.steps.length; i++){
     builder.steps[i].id = i+1;
-    if(i === 0 && builder.steps[i].hardware.length < 1){
+    if(i === 0 && (builder.steps[i].hardware === undefined || builder.steps[i].hardware.length < 1)){
       dispatch(setError(i, 'hardware'));
     }
-    if(builder.steps[i].headline === ''){
+    if(builder.steps[i].headline === undefined || builder.steps[i].headline === ''){
       dispatch(setError(i, 'headline'));
     }
-    if(builder.steps[i].text === ''){
+    if(builder.steps[i].text === undefined || builder.steps[i].text === ''){
       dispatch(setError(i, 'text'));
     }
   }
@@ -180,3 +187,45 @@ export const checkError = () => (dispatch, getState) => {
   }
   return false;
 }
+
+export const progress = (inProgress) => (dispatch) => {
+  dispatch({
+    type: PROGRESS,
+    payload: inProgress
+  })
+};
+
+export const resetTutorial = () => (dispatch, getState) => {
+  dispatch(tutorialTitle(''));
+  dispatch(tutorialId(''));
+  var steps = [
+    {
+      id: 1,
+      type: 'instruction',
+      headline: '',
+      text: '',
+      hardware: [],
+      requirements: []
+    }
+  ];
+  dispatch(tutorialSteps(steps));
+  dispatch({
+    type: BUILDER_ERROR,
+    payload: {
+      steps: [{}]
+    }
+  });
+};
+
+export const readJSON = (json) => (dispatch, getState) => {
+  dispatch(resetTutorial());
+  dispatch({
+    type: BUILDER_ERROR,
+    payload: {steps: [{},{}]}
+  });
+  dispatch(tutorialTitle(json.title));
+  dispatch(tutorialId(json.id));
+  dispatch(tutorialSteps(json.steps));
+  dispatch(setSubmitError());
+  dispatch(progress(false));
+};
diff --git a/src/actions/types.js b/src/actions/types.js
index c5fb2a5..e31e72f 100644
--- a/src/actions/types.js
+++ b/src/actions/types.js
@@ -25,3 +25,4 @@ export const BUILDER_CHANGE_STEP = 'BUILDER_CHANGE_STEP';
 export const BUILDER_CHANGE_ORDER = 'BUILDER_CHANGE_ORDER';
 export const BUILDER_DELETE_PROPERTY = 'BUILDER_DELETE_PROPERTY';
 export const BUILDER_ERROR = 'BUILDER_ERROR';
+export const PROGRESS = 'PROGRESS';
diff --git a/src/components/Tutorial/Builder/BlocklyExample.js b/src/components/Tutorial/Builder/BlocklyExample.js
index c8e8994..9c64bf4 100644
--- a/src/components/Tutorial/Builder/BlocklyExample.js
+++ b/src/components/Tutorial/Builder/BlocklyExample.js
@@ -5,7 +5,9 @@ import { changeContent, deleteProperty, setError, deleteError } from '../../../a
 
 import moment from 'moment';
 import localization from 'moment/locale/de';
+import * as Blockly from 'blockly/core';
 
+import { parseXml } from '../../../helpers/compareXml';
 import BlocklyWindow from '../../Blockly/BlocklyWindow';
 
 import { withStyles } from '@material-ui/core/styles';
@@ -94,27 +96,38 @@ class BlocklyExample extends Component {
             />
           }
         />
-        {this.state.checked ? !this.props.value  ?
+        {this.state.checked ? !this.props.value || this.props.error.steps[this.props.index].xml ?
           <FormHelperText style={{lineHeight: 'initial', marginBottom: '10px'}} className={this.props.classes.errorColor}>Reiche deine Blöcke ein, indem du auf den rot gefärbten Button klickst.</FormHelperText>
         : <FormHelperText style={{lineHeight: 'initial', marginBottom: '10px'}}>Die letzte Einreichung erfolgte um {this.state.input} Uhr.</FormHelperText>
         : null}
-        {this.state.checked ?
-          <div>
-            <Grid container className={!this.props.value ? this.props.classes.errorBorder : null}>
-              <Grid item xs={12}>
-                <BlocklyWindow initialXml={this.props.value}/>
+        {this.state.checked ? () => {
+          var initialXml = this.props.value;
+          // check if value is valid xml;
+          try{
+            Blockly.Xml.textToDom(initialXml);
+          }
+          catch(err){
+            initialXml = null;
+            this.props.setError(this.props.index, 'xml');
+          }
+          return(
+            <div>
+              <Grid container className={!this.props.value ? this.props.classes.errorBorder : null}>
+                <Grid item xs={12}>
+                  <BlocklyWindow initialXml={initialXml}/>
+                </Grid>
               </Grid>
-            </Grid>
-            <Button
-              className={!this.props.value ? this.props.classes.errorButton : null }
-              style={{marginTop: '5px', height: '40px'}}
-              variant='contained'
-              color='primary'
-              onClick={() => {this.props.changeContent(this.props.index, 'xml', this.props.xml); this.setState({input: moment(Date.now()).format('LTS')})}}
-            >
-              {this.props.task ? 'Musterlösung einreichen' : 'Beispiel einreichen'}
-            </Button>
-          </div>
+              <Button
+                className={!this.props.value || this.props.error.steps[this.props.index].xml ? this.props.classes.errorButton : null }
+                style={{marginTop: '5px', height: '40px'}}
+                variant='contained'
+                color='primary'
+                onClick={() => {this.props.changeContent(this.props.index, 'xml', this.props.xml); this.setState({input: moment(Date.now()).format('LTS')})}}
+              >
+                {this.props.task ? 'Musterlösung einreichen' : 'Beispiel einreichen'}
+              </Button>
+            </div>
+          )}
         : null}
       </div>
     );
diff --git a/src/components/Tutorial/Builder/Builder.js b/src/components/Tutorial/Builder/Builder.js
index 2789fd3..9b3aa8e 100644
--- a/src/components/Tutorial/Builder/Builder.js
+++ b/src/components/Tutorial/Builder/Builder.js
@@ -1,10 +1,11 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
 import { connect } from 'react-redux';
-import { checkError } from '../../../actions/tutorialBuilderActions';
+import { checkError, readJSON, progress, resetTutorial } from '../../../actions/tutorialBuilderActions';
 
 import { saveAs } from 'file-saver';
 
+import data from '../../../data/hardware.json';
 import { detectWhitespacesAndReturnReadableResult } from '../../../helpers/whitespace';
 
 import Breadcrumbs from '../../Breadcrumbs';
@@ -12,14 +13,30 @@ import Id from './Id';
 import Title from './Textfield';
 import Step from './Step';
 
+import { withStyles } from '@material-ui/core/styles';
 import Button from '@material-ui/core/Button';
+import Backdrop from '@material-ui/core/Backdrop';
+import CircularProgress from '@material-ui/core/CircularProgress';
+import Divider from '@material-ui/core/Divider';
+
+const styles = (theme) => ({
+  backdrop: {
+    zIndex: theme.zIndex.drawer + 1,
+    color: '#fff',
+  }
+});
 
 class Builder extends Component {
 
+  constructor(props){
+    super(props);
+    this.inputRef = React.createRef();
+  }
+
   submit = () => {
     var isError = this.props.checkError();
     if(isError){
-      alert('Error');
+      window.scrollTo(0, 0);
     }
     else{
       var tutorial = {
@@ -32,6 +49,74 @@ class Builder extends Component {
     }
   }
 
+  reset = () => {
+    this.props.resetTutorial();
+    window.scrollTo(0, 0);
+  }
+
+  uploadJsonFile = (jsonFile) => {
+    this.props.progress(true);
+    if(jsonFile.type !== 'application/json'){
+      alert('falscher Dateityp');
+      this.props.progress(false);
+      this.setState({ open: true, file: false, title: 'Unzulässiger Dateityp', content: 'Die übergebene Datei entsprach nicht dem geforderten Format. Es sind nur JSON-Dateien zulässig.' });
+    }
+    else {
+      var reader = new FileReader();
+      reader.readAsText(jsonFile);
+      reader.onloadend = () => {
+        try {
+          var result = JSON.parse(reader.result);
+          if(this.checkSteps(result.steps)){
+            alert('Hier');
+            this.props.readJSON(result);
+          }
+          else{
+            this.props.progress(false);
+            alert('die JSON-Datei hat nicht die richtige Form');
+          }
+        } catch(err){
+          this.props.progress(false);
+          alert('ungültige JSON-Datei');
+          this.setState({ open: true, file: false, title: 'Ungültige XML', content: 'Die XML-Datei konnte nicht in Blöcke zerlegt werden. Bitte überprüfe den XML-Code und versuche es erneut.' });
+        }
+      };
+    }
+  }
+
+  checkSteps = (steps) => {
+    if(!(steps && steps.length > 0)){
+      alert(1);
+      return false;
+    }
+    steps.map((step, i) => {
+      if(i === 0){
+        if(!(step.requirements &&
+             step.requirements.length > 0 &&
+             step.requirements.filter(requirement => typeof(requirement) === 'number').length === step.requirements.length)){
+          alert(3);
+          return false;
+        }
+        var hardwareIds = data.map(hardware => hardware.id);
+        if(!(step.hardware &&
+             step.hardware.length > 0 &&
+             step.hardware.filter(hardware => typeof(hardware) === 'string' && hardwareIds.includes(hardware)).length === step.hardware.length)){
+          alert(4);
+          return false;
+        }
+      }
+      if(!(step.headline && typeof(step.headline)==='string')){
+        alert(5);
+        return false;
+      }
+      if(!(step.text && typeof(step.text)==='string')){
+        alert(6);
+        return false;
+      }
+    });
+    return true;
+  }
+
 
   render() {
     return (
@@ -40,6 +125,20 @@ class Builder extends Component {
 
         <h1>Tutorial-Builder</h1>
 
+        <div ref={this.inputRef}>
+          <input
+            style={{display: 'none'}}
+            accept="application/json"
+            onChange={(e) => {this.uploadJsonFile(e.target.files[0])}}
+            id="open-json"
+            type="file"
+          />
+          <label htmlFor="open-json">
+            <Button component="span" style={{marginRight: '10px', marginBottom: '10px'}} variant='contained' color='primary'>Datei laden</Button>
+          </label>
+        </div>
+        <Divider variant='fullWidth' style={{margin: '10px 0 30px 0'}}/>
+
         <Id error={this.props.error} value={this.props.id}/>
         <Title value={this.props.title} property={'title'} label={'Titel'} error={this.props.error}/>
 
@@ -49,7 +148,11 @@ class Builder extends Component {
         )}
 
 
-        <Button variant='contained' color='primary' onClick={() => this.submit()}>Tutorial-Vorlage erstellen</Button>
+        <Button style={{marginRight: '10px'}} variant='contained' color='primary' onClick={() => this.submit()}>Tutorial-Vorlage erstellen</Button>
+        <Button variant='contained' onClick={() => this.reset()}>Zurücksetzen</Button>
+        <Backdrop className={this.props.classes.backdrop} open={this.props.isProgress}>
+          <CircularProgress color="inherit" />
+        </Backdrop>
 
 
       </div>
@@ -63,10 +166,14 @@ class Builder extends Component {
 
 Builder.propTypes = {
   checkError: PropTypes.func.isRequired,
+  readJSON: PropTypes.func.isRequired,
+  progress: PropTypes.func.isRequired,
+  resetTutorial: PropTypes.func.isRequired,
   title: PropTypes.string.isRequired,
   steps: PropTypes.array.isRequired,
   change: PropTypes.number.isRequired,
-  error: PropTypes.object.isRequired
+  error: PropTypes.object.isRequired,
+  isProgress: PropTypes.bool.isRequired
 };
 
 const mapStateToProps = state => ({
@@ -74,7 +181,8 @@ const mapStateToProps = state => ({
   id: state.builder.id,
   steps: state.builder.steps,
   change: state.builder.change,
-  error: state.builder.error
+  error: state.builder.error,
+  isProgress: state.builder.progress
 });
 
-export default connect(mapStateToProps, { checkError })(Builder);
+export default connect(mapStateToProps, { checkError, readJSON, progress, resetTutorial })(withStyles(styles, {withTheme: true})(Builder));
diff --git a/src/components/Tutorial/Builder/Step.js b/src/components/Tutorial/Builder/Step.js
index 7124131..740a686 100644
--- a/src/components/Tutorial/Builder/Step.js
+++ b/src/components/Tutorial/Builder/Step.js
@@ -89,11 +89,11 @@ class Step extends Component {
             <Textfield value={this.props.step.text} property={'text'} label={this.props.step.type === 'task' ? 'Aufgabenstellung' : 'Instruktionen'} index={index} multiline error={this.props.error} errorText={`Gib Instruktionen für die ${this.props.step.type === 'task' ? 'Aufgabe' : 'Anleitung'} ein.`}/>
             {index === 0 ?
               <div>
-                <Requirements value={this.props.step.requirements} index={index}/>
-                <Hardware value={this.props.step.hardware} index={index} error={this.props.error}/>
+                <Requirements value={this.props.step.requirements ? this.props.step.requirements : []} index={index}/>
+                <Hardware value={this.props.step.hardware ? this.props.step.hardware : []} index={index} error={this.props.error}/>
               </div>
             : null}
-            <BlocklyExample value={this.props.step.xml} index={index} task={this.props.step.type === 'task'} />
+            <BlocklyExample value={this.props.step.xml} index={index} task={this.props.step.type === 'task'} error={this.props.error}/>
           </div>
         </div>
       </div>
diff --git a/src/components/Tutorial/Builder/StepType.js b/src/components/Tutorial/Builder/StepType.js
index f482990..910b2df 100644
--- a/src/components/Tutorial/Builder/StepType.js
+++ b/src/components/Tutorial/Builder/StepType.js
@@ -11,7 +11,7 @@ class StepType extends Component {
 
   render() {
     return (
-      <RadioGroup row value={this.props.value} onChange={(e) => {this.props.changeContent(this.props.index, 'type', e.target.value)}}>
+      <RadioGroup row value={this.props.value === 'task' ? 'task' : 'instruction'} onChange={(e) => {this.props.changeContent(this.props.index, 'type', e.target.value)}}>
         <FormControlLabel style={{color: 'black'}}
           value="instruction"
           control={<Radio color="primary" />}
diff --git a/src/reducers/tutorialBuilderReducer.js b/src/reducers/tutorialBuilderReducer.js
index 3103403..6296da2 100644
--- a/src/reducers/tutorialBuilderReducer.js
+++ b/src/reducers/tutorialBuilderReducer.js
@@ -1,7 +1,8 @@
-import { BUILDER_CHANGE, BUILDER_ERROR, BUILDER_TITLE, BUILDER_ID, BUILDER_ADD_STEP, BUILDER_DELETE_STEP, BUILDER_CHANGE_STEP,BUILDER_CHANGE_ORDER, BUILDER_DELETE_PROPERTY } from '../actions/types';
+import { PROGRESS, BUILDER_CHANGE, BUILDER_ERROR, BUILDER_TITLE, BUILDER_ID, BUILDER_ADD_STEP, BUILDER_DELETE_STEP, BUILDER_CHANGE_STEP,BUILDER_CHANGE_ORDER, BUILDER_DELETE_PROPERTY } from '../actions/types';
 
 const initialState = {
   change: 0,
+  progress: false,
   title: '',
   id: '',
   steps: [
@@ -50,6 +51,11 @@ export default function(state = initialState, action){
         ...state,
         error: action.payload
       }
+    case PROGRESS:
+      return {
+        ...state,
+        progress: action.payload
+      }
     default:
       return state;
   }