For anyone that wants to try this type of coding, I would recommend just to start. Pick your favorite language and just start drawing things. You will often need some thing that you don't know, but you will learn as you go. It often feels like 'hacking' to get result. Coding train, reddit, and personal blogs are perfect starting points. Remember, like in any art, it is about process, not result.

BTW: Every January is month of creative coding (https://genuary.art/), so you can join hundreds of other artists in 'solving' daily prompts. I did last Genuary (well not all prompts), and I got some some results that I am proud of (https://github.com/ubavic/genuary2022). That was the first time I coded in Processing.