itch.io

Thanks for the answer. I could do that. But I haven't bought the book yet. I wanted to know if there was some kind of money back guarantee if I don't like it? 20$ + vat is not a impluse buy for me.

I understand the first chapters, but I am not sure about the rest. 

Hey, I boutht your game. Good job. I don't understand the source code, though. Is that some kind of elaborate mind trick to buy your book? Is there a money back thing if I am too stupid for  your book?

Sound was on the agenda, but had to be cut because of beginner brain constraints ;-)