[riffraff]

I am not qualified enough to answer, but some ~15 years ago I enjoyed going through the book Code Reading[0], which is about this exact topic.

I think there was another one with a similar name but I can't think of it's name.

0: https://www.spinellis.gr/codereading/, check the TOC https://www.spinellis.gr/codereading/toc.html