OpenGL resources

Gonna be offline for a few months, and I'm determined to learn more about OpenGL.

I'm looking for an archived OpenGL reference documentation I can download, kinda like the archived version of http://www.cppreference.com/wiki/

>>1
[1] The OpenGL Programming Guide - The Redbook , D.Shreiner, M.Woo, J.Neider, T.Davis , Addison-Wesley Professional , 2005

[2] Advanced Graphics Programming Using OpenGL , Tom McReynolds , David Blythe , Morgan Kaufmann Publishers , 2005

[3] OpenGL Tutorials , Nehe Productions™,  http://nehe.gamedev.net/