In this section:
Reference pages for OpenGL are available at
https://www.khronos.org/opengl/
https://learnopengl.com/Getting-started/OpenGL
http://www.opengl-tutorial.org/
https://docs.microsoft.com/en-us/windows/win32/opengl/opengl
The OpenGL web site contains links to a variety of articles, the OpenGL specification, and the OpenGL usenet mailing list.
Other items are available to members of the Microsoft Developer Network. Online versions of technical articles are also available on the Microsoft Developer homepage.