1st of all,
to the forum !!!!
There should be a generalized manual from Forest River that is in your information packet. There should also be separate manuals for the appliacnces, ie microwave, fridge, water,heater, furnace, converter, etc. If you dealer did not provide those, then he needs to get on the ball and get those to you.
Read through the manuals to familiarize yourself with the operations of each item.
Leveling: Level side to side 1st by using wood blocks or Lynx Levelers under the low side, then chock you wheels, unhook, and level front to back with the tongue jack. Lower stabilizer jacks, but not too hard as they are flimsy.
Water: Hook up a dedicated hose (drinking hose) to the hydrant and to your city water connection. I also use a pressure regulator and an inline water filter at the hydrant. Make sure all faucets in the camper are closed before turning on the water. Turn on the water, and then bleed each faucet. The 1st hot water faucet will take some time as you fill up the water heater.
Dumping the waste tanks: Hook up the sewer hose to the dump valve, put the other end into the dump station inlet....make sure you secure that end with your foot, a big rock, or the flip-up cover. Dump the black tanks 1st. I usually drain the line after the tank emptys the best I can by raising the hose at valve and working it towards the dump station inlet. Close the black tank valve, and then do the same with the gray water tank. Close the gray water vavle, again drain the line, remove the hose from the camper fitting, and again drain towards the dump station. Wash down any drips and the sewer hose, store the hose, cap the camper fitting, and you are done. I usually wear disposable vinyl gloves and wash my hands with an alcohol wipe afterwards.