Something very useful is to know the tools available to teams when programing their robots. I would explore the ScreenSteps and look at all of the documentation available to teams.
http://wpilib.screenstepslive.com/s/4485
Something else you can do, if you learn best by example, is to look at the examples. After installing Eclipse and the FRC Plugins (take a look at ScreenSteps for instructions) open the examples by doing:
File -> New -> Other -> WPILib Robot C++ Development -> Example Robot C++ Project