I'd recommend https://webglfundamentals.org https://webglfundamentals.org at least as a starting place As for using OpenGL ES references, there are enough diff

I'd recommend https://webglfundamentals.org https://webglfundamentals.org at least as a starting place As for using OpenGL ES references, there are enough differences what I wouldn't recommend that route. 85% or 95% of the info will be similar but WebGL has a bunch of minor gotchas and changes to the spec to make it secure and consistent and those ways will be no fun to discover when you're copying code from a C or C++ OpenGL ES example.