Multiplying matrices

http://www.tutorvista.com/math/multiply-two-3x3-matrices

Random equation that had me thinking for days =/

CFOP Fridrich Method to solve the Magic Cube 3x3x3

http://www.speedsolving.com/wiki/index.php/Fridrich_Method
http://www.youtube.com/watch?v=k-xbcAMfWwM badmephisto F2L
Method used by most sub-10 users.

2-look PLL: http://www.speedsolving.com/wiki/index.php/2-Look_PLL
2-look OLL: http://www.speedsolving.com/wiki/index.php/2-Look_OLL