OpenGL

Welcome to OpenGL

Link

opengl-tutorial

Link

OGLDev

Link

open.gl

Link

Graphics Theoretics

Learning Modern 3D Graphics Programming - Jason L. McKesson

Link

Graphics Debugging

RenderDoc

RenderDoc is a free MIT licensed stand-alone graphics debugger

Link

AMD GPUOpen

Link

3D Game Engine Programming

Link

Other

Neon Helium Productions Blog

Link

How to program 3D graphics from scratch. Without 3D engines. (In Python)

Link