Well to start off, electrical is not hard at all, its extremely simple. Even with the new control system coming out. To get a full outline on the FIRST rules and regulations of electrical i would encourage you to go to their site and check them out.
Other than that, There is really nothing tough about it. You have a battery that goes to a breaker panel. That breaker panel supplies power to EVERYTHING on the robot. From there you have components that run motors and compressors. Those recieve power. Some of the electrical diagrams on the FIRST website will really help you out.
If you do have any questions about the more in depth details of electrical your more then welcome to PM me or email or whatever you would like. Those rules and diagrams will help you though, So any questions ask me or post on this thread again. Everyone on Chief Delphi is extremely helpful.

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Team 79 Alumni '11- Present
Team 79 Driver '09, '10
Team 79 Senior CAD Designer '09, '10
Team 79 President '09
Team 79 Electrical Sub Team Leader '08, '09