I while back, in the old forum, somebody was seeking Processing.py books/PDFs/videos.
I’ve also been looking and couldn’t find quite what I needed for my students – so I’ve started writing an online textbook:
https://tabreturn.github.io/#processing-reverse
I know there’s “Getting Started with Processing.py”, but this is something more like Ira Greenberg’s book (except in Python). In other words, more general programming and computer science concepts rolled into a visually-oriented, creative programming course.
It’s a work in progress, but six chapters in already! It is designed to serve as a programming fundamentals course for creative technologies students, who will then advance to courses with more Python coding (Web, Apps, Data-viz, AI, etc.).