Some Links about OpenGL:

1. Commands: http://www.cevis.uni-bremen.de/~uwe/opengl/opengl.html (about GL, GLU, and GLX function)

2. OpenGL FAQ and Troubleshooting Guide: http://www.frii.com/~martz/oglfaq/#indx0030

3. OpenGL: http://www.codeguru.com/opengl/index.shtml

4. The EFnet #OpenGL FAQ -- Revision 3.11.2000: http://www.geocities.com/SiliconValley/Park/5625/opengl/
   
   

5. f00Dave’s OpenGL Demo: http://personal.nbnet.nb.ca/daveg/opengl/

6. OpenGL Tutors: http://www.xmission.com/~nate/tutors.html

7. GLUT Website: http://www.xmission.com/~nate/glut.html

8. About GLUT: pyopengl.sourceforge.net/documentation/manual/reference-GLUT.html

9. GLU, GLX & DRI: http://www.opengl.org/developers/documentation/glx.html