Hey, just wanted to quickly shout out an awesome VSCode/Codium extension that really helped me out when trying to learn GDShaders.

https://alfish.itch.io/godot-files-vscode

"Godot Files extension for Code is a free VSCode/Codium plugin with syntax coloring for Godot Shaders and assets/config files, as well as some extra convenience features."

I am not affiliated with the project in any way other than having donated to support its continued development, but I think it is amazing what this guy is doing, and it deserves more attention, so if you have a use for it, check it out!