If you are a beginner to creative coding, the following resources will help you:

General:

• Creative coding minilist: https://github.com/CreativeCodeBerlin/creative-coding-minilist
• The Coding Train tutorials & challenges: https://thecodingtrain.com/
• Nature of Code book: https://natureofcode.com/
• Generative Design book: http://www.generative-gestaltung.de/2/
• Generative Artistry: https://generativeartistry.com/tutorials/
• Awesome Creative Coding: https://github.com/terkelg/awesome-creative-coding

Shaders:

• The Book of Shaders: https://thebookofshaders.com/
• SuperHi: Shaders for the Web course (GLSL, 💲💲) https://www.superhi.com/courses/shaders-for-the-web
• Shadertoy: https://www.shadertoy.com/
  • Programming tricks in shadertoy & glsl: https://shadertoyunofficial.wordpress.com/2019/01/02/programming-tricks-in-shadertoy-glsl/
• Cineshader: https://cineshader.com/
• Youtube channel The Art of Code: https://www.youtube.com/channel/UCcAlTqd9zID6aNX3TzwxJXg
• Unity-specific:

Blogs, article collections (sometimes more advanced):

• https://tylerxhobbs.com/essays