Sorry, no offence, but this is a terrible resource to start learning graphics. First of all good luck downloading those examples (most of the links are broken), then compile them (many examples were made for Visual C++ 6.0 or some niche IDE from 2000s). I loved NeHe around 2005 as well, learned a lot from it, even though later switched to web development and never used that knowledge. But this days better to choose something like https://learnopengl.com at least. Or better yet any resources on WebGL, since OP is a web dev. Concepts around shaders and modern programmable graphics pipeline still translates well compared to immediate mode OpenGL samples from NeHe.