Eagle Download & Library Links:
Schematic Commands: Commands are written in the command line in Eagle, followed by [ENTER]. Example: Add[ENTER] Once you have instated the command, it is active until you type a different command in the command line.
Common Commands: add/move/delete/copy/paste/rotate/group/net/name/value/
Tutorial for making your own Eagle library:
Sparkfun has a very helpful page on Eagle .brd Design Rules.
Better PCBs in Eagle: https://www.sparkfun.com/tutorials/115
CAM processor: http://www.sparkfun.com/tutorial/Eagle-DFM/sfe-gerb274x.cam