Thanks for posting to the Telerik Developer Forums and for starting the Interactive Tutorials.
Also, I'd suggest that refer to the repository of the completed app
if you need to compare your code to the finished version.
In regard to your other question - you can start from a new AppBuilder Hybrid Project
and choose the Kendo UI Blank
Template. However, the tutorial app contains a few predefined code that is not included in the template.
If this is convenient for you, you can restart the tutorial by clicking the Restart Tutorial button. You need to be in the context of a tutorial and located at the first page. Each tutorial pane has its own navigation that allows you to switch between the steps and the lessons.
Let me know if this helps.