The bookshelf gave me the note, but I don't see an item. Maybe I'm just stupid, haha.
Oh, I probably know what's happening. If you don't see the bottom part of the GUI here:
It's likely because I forgot to make the GUI actually scale and your display's resolution isn't tall enough to view it.
Sorry about that! Thanks for trying, haha.
Ah, yeah that makes sense. No problem, it looks like it'd be a lot of fun if I got it working!