Locate a suitable campground with hookups (electrical, water), preferably near a public restroom with showers.
If the camper has pop-ups or pop-outs, extend and secure them. Unload the outdoor equipment, if any (collapsible picnic table, lantern, tent(s), Porta-Potty, etc.).
Lower the camper's support legs if camping for more than a couple days (especially if you want to use the truck for transportation while camping), raise it from the truck bed, move the truck out of the way and lower the camper to a more desirable height. Use a circular bubble level inside the camper and adjust the support legs as needed to level the camper.
Attach hookups (electricity and water); test electrical systems and turn on the faucet--both cold and hot--to clear air from the line; turn off when water runs smoothly. Deploy awning(s) if the camper has one or more.
Light your water heater, if any, and open the valve on the camper's mounted propane tank, if any. If the camper has a gas stove and/or oven with a pilot light, light the pilot; do the same if the camper contains a gas heater.
Erect a small one-man tent and place the Porta Potty inside; place a roll of toilet paper beside it.
Deploy the collapsible picnic table under the awning if the camper contains one; place the lantern on the table. For those camping with several people, the kitchen facilities of the camper may not suit their needs, so place a camp stove on the picnic table and double up with the facilities inside to make larger meals.
Lay a clean grill over the fire pit grill. Most campgrounds offer fire pits with cooking grills; however, these grills are often filthy, so use your own for cooking if desired. Cooking over a wood fire adds a wonderful smoky flavor to everything you cook.
Erect a second tent if camping with more than three people.
Place as many ground pads into the tent as is required and lay sleeping bags over them. The tent dwellers may use the lantern on the picnic table for light when they retire for the evening.