Congratulations on your new trailer. As mentioned before, leveling is not necessary for storing the trailer. There will also be times when you can't get the trailer perfectly level. Don't stress it, close as possible is good enough. Practice doing your set up, hook ups, take downs, etc., (dry runs in the driveway,), and familiarize yourself with your trailer. Read your manuals. You will be surprised at how quickly the routine will become second nature to you. Mainly, be not afraid of the trailer, or to ask any questions of the forum members.
Charlie & Lizzie the Mini Dachshunds
2008 Jayco Eagle Super Lite 30.5 RLS
2006 F250 XLT Xtra Cab Long Bed 6.0 Diesel
24 hours in a day, 24 beers in a case. Coincidence? I think not.