Some very basic shader tutorials?

Unity Shader Programming: Beginners to Advanced Techniques

Shader Development using Unity

Sildur's Vibrant Lite Shaders for Minecraft [1.18][1.17.1][1.16.5][1.12.2][1.8.9][1.7.10]

Sildur's Vibrant Shaders 1.21.11 / 1.21.10 / 1.21.9 | Download

Shader Effects - Color Theory - Awwwards

[Released] 2D Effects Creator - Node-Based 2D Shader Effect Creation Tool