Terri.... the hitch portion that attaches to the vehicle will be VERY heavy. To save your back, leave it on and put a locking hitch pin on, so it doesn't walk away.
Connecting the load leveling bars can require some herculian strength. There is a trick however.....attach the trailer to the truck, lock the hitch ball to the trailer by throwing the lever and then use the trailer jack to lift the front of the trailer as high as you can. This will make attaching the bars much easier. Have someone show you this procedure.