Welcome to FRF. The best advice I can give you is to read and learn as much as you can about the different systems (water, electric, holding tanks, appliances, propane, etc.) as you can. The more info you have the better prepared you'll be if something out of the ordinary pops up. Other than that, Have a great time camping and don't worry about stuff too much.
Salem 29RKSS Pushing a 2500 Mega-Cab CTD!
Gotta go campin!