Where can I get information on WebGL and the library itself?

Question

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Hello.
Here they gave us a task at the university, divided into several points. The final should be a program in which a three-dimensional figure is drawn, on which a number of operations can be performed. A list of functions must be implemented: the Roberts algorithm, z-buffer and others.
I started using canvas and got to the Roberts algorithm using only canvas.getContext('2d'); . Now it's z-buffer's turn and I want to use WebGL, but googling has yielded only some dubious lessons.
Can someone bring me up to date: where can I get information on WebGL and the library itself, and are I asking the right questions in general?

Answer 1

The library itself does not need to be taken from anywhere, it is built into the browser
Information can be viewed, for example, here or here

Answer 2

https://developer.mozilla.org/en-US/docs/Web/WebGL
https://www.khronos.org/registry/webgl/specs/latest/

Answer 3

https://developer.mozilla.org/en/docs/Web/WebGL