This book is quite old. I would argue that Realtime Rendering 4th edition is the better book. Bonus points if you pair it with some online resources to get a deeper understanding of the topics (but the textbook contains follow up material for all discussed topics).
Depends on the edition, the last one is from 2013 uses C# for most of its examples.
It might not be great for 3D rendering algorithms, then again that is the hardware time that WebGL 2.0 and WebGPU are stuck with.