Some very basic shader tutorials?

Unity Shader Programming: Beginners to Advanced Techniques

Shader Development using Unity

Complementary Shaders - Unbound

Complementary Reimagined Shaders 1.21 / 1.20 | Shader Pack for Minecraft

Complementary Reimagined Shaders 1.21.11 / 1.21.10 / 1.21.9

Shader Effects - Color Theory - Awwwards

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