I'm looking for resources on this too. I recently started working through this book [1], which might be a good place to start. In the introduction to that, the author also mentions this site [2] and this book [3].

[1] https://natureofcode.com/

[2] https://available-anaconda-10d.notion.site/That-Creative-Cod...

[3] https://www.amazon.com/Computational-Beauty-Nature-Explorati...

Tyler Hobbs writes about generative art, including getting started and improving. Some of his tips are Clojure-specific, and others are more general. I found the essay on flow fields especially interesting. https://tylerxhobbs.com/essays/2020/flow-fields

This is what got me into it: https://youtu.be/4Se0_w0ISYk

It's a short conference video from Tim Holman, where he breaks down the "toolbox" you need. He shows lines, curves, randomness, repetition etc, and how you combine these simple concepts to make something cool. After that short video you basically have what you need to start experimenting.

There is a bunch of related "awesome lists" on github.

https://github.com/terkelg/awesome-creative-coding

https://github.com/kosmos/awesome-generative-art

https://github.com/cdr6934/awesome-generative-books