This was generated using free software I made with a colleague. The software is mwfractal (Moore-Willcock Fractal) and written in C++.
The idea is that you can read chapters of this book, discuss them, try the exercises in the book, ask and answer questions, and maybe team up to create software that implements some of the ideas.
I downloaded a free book about applied category theory (293 pgs) and emailed the PDF to my Kindle for later study. I honestly don’t know what I’m getting into, but this could be a nice change of pace back to non-fiction reading (I read a lot). There is an online forum there at the link and some open lectures by one of my nerd-heroes, John Baez. If you like physics & maths, you may like this too!