For further information, please refer the following:
- A complete tutorial on modern OpenGL programming can be found at https://paroj.github.io/gltut
- Packt Publications' Learn OpenGL, available at https://www.packtpub.com/game-development/learn-opengl, is a good resource for learning the basics of OpenGL
- A free tutorial on matrix mathematics for 3D graphics is available from Central Connecticut State University at https://chortle.ccsu.edu/VectorLessons/vectorIndex.html