Familiarize yourself with how the travel trailer operates. Make sure you know where all the hoses and connections are, how to stabilize the unit once parked and where all the lights are located. Read through your owner's manual.
Take a short trip to become familiarized with the whole camping process. It's better to learn close to home where mistakes won't be so catastrophic. You can even try to find a suitable camping spot in your own town or city.
Become familiar with campgrounds near or at your destination. A number of guidebooks are on the market, with different information or slants. Call ahead of time to make reservations especially if traveling during peak times. Make sure the campground has facilities you desire or require. For instance, not all campgrounds have adequate spaces to host very large rigs, and not all places, especially public ones, have electrical or sewer hookups.
Arrange to arrive at your destination well before dark. It's difficult to get settled in and hooked up without sunlight, especially when you are new to the process. Be sure to have flashlights with fresh batteries on hand for those just-in-case moments, however.
Familiarize yourself with camping culture. Talk to the campground host and other campers and read forums. Other campers are often your best sources for learning the ins and outs. You'll get an amazing amount of help, as campers are typically friendly and helpful to newcomers and eager to share their camping wisdom.
Prepare for each trip with some details. Have a route planned, adequate maps, phone numbers for destinations, plenty of water in case fresh water is inaccessible and owner's manuals for gear and the trailer itself. Pack wisely with enough clothing, supplies and food but don't overload the trailer.