[scyclow]

p5 is great! Very easy to learn and has an amazing online editor to get you started immediately. Such a good tool for prototyping ideas quickly.

https://editor.p5js.org/

[twox2]

I second p5js. Try Dan Shifman's "The Coding Train" videos on youtube.

[iszomer]

I third recommend p5js. If you're looking for more different flavors, try the Awesome Creative Coding page on github to get your bearings.

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