I ditto both Marc and the AeroElectric book. The AeroElectric book has a lot of great information on the basics of wiring, loads, switches, etc. He also has a lot of designs that you can pick from and explains several scenarios that are useful in designing your setup.
Personally I use the VP-X. Marc is a great guy to talk to and also has a lot of great ideas as well. He's good with answering Email and his forum at Sun n' Fun was great on things that you need to think about with modern panels and our increasingly electric airplanes.