Where to get additional information on OpenGL?
The official site for OpenGL maintained by the members of the ARB, is www.opengl.org, A most recommended site is Mark Kilgard’s Gateway to OpenGL Info at reality.sgi.com/mjk_asd/opengl-links.html: it provides pointers to book, online manual pages, GLUT, GLE, Mesa, ports to several OS, tons of demos and tools.