Looks as good as "Building Git", which I'm currently enjoying. https://shop.jcoglan.com/building-git/

If it will get me over the monad hump with Haskell, all the better.

I believe that the aesthetics and layout are inspired by Edward Tufte [1].

[1] https://edwardtufte.github.io/tufte-css/

Thank you! I am glad you are enjoying it :)