If you don't have any kind of experience, you are better off starting with WebGL.

It is more beginner friendly and it is here now.

You can either start from scratch:

https://webglfundamentals.org/

Or use one of the two most developer friendly frameworks.

https://threejs.org/

https://www.babylonjs.com/

If you have zero experience in graphics, another approach is to learn about 3D software rendering in first place.

https://www.davrous.com/2013/06/13/tutorial-series-learning-...

Leave WebGPU for when you feel comfortable with 3D programming.