Need step by step help de-winterizing

First, welcome. We'll all get you through this. Not as difficult as you think. To dewinterize, open low point drains (should be 2 lines dropping below trailer). Open any faucets, hot and cold. The antifreeze won't hurt your lawn, but you can catch it in a bucket, either way. You'll know when it's drained. Close the low point drains. Hook up the city water, open each faucet until no pink antifreeze comes out. Turn off the city water. Next, set the valves on the water heater. You should have 2 lines, one going in, one out. You probably have a line between them. Open the 2 going in and out (valve handle in line with pipe). Close the one in between the 2 (handle at 90 degree angle). Are you drinking from the water system? If not, I wouldn't bother worrying about sanitizing the system at this time until you're more familiar and confident. When you turn on the water again the water heater should fill. Open a hot water faucet near it. It will take a while to fill, and when it does the water will sputter. Let it run until it runs smooth. ONLY THEN turn on the water heater. NEVER turn on heater unless you know the water heater is full. You really don't need to do anything with black and gray tanks except empty them. More questions or things look different? Post them here. Have fun!