The game and the programming language look so interesting, but I cannot figure out what to do, and I can't type in any code.

Yeah it's kind of a mess right now and I probably wont be fixing it anytime soon. If you find info buttons and press them they give you "tutorials" on how to do things.

I think that this project is basically scrapped, but I do intend to remake it 2d and text only, maintaining the "physical" aspect of components and stuff.