Use it on vent covers and bug guard screens to protect your fridge, furnace and water heater vents from things like mud daubers. A surge protector is a must, get a portable one and use a padlock on the electric box to protect it. No drilling or handy work needed. Use Wal-Mart or Amazon or other online sources to get things like server hose (get rhino brand), clear sewer elbow, fresh water hose, chocks (get these before your trailer comes home) , levelers (i.e. lynx levelers or Anderson levelers) and water pressure regulator (really cheap at Wal-Mart).
As for not being handy, it is time to learn. My DH is not handy either but he is learning, a little say time. Also, don't waste your money on rv toilet paper, any septic safe toilet paper is fine. Angel soft works very well. Don't waste your money on toilet chemicals either. Just use a good black tank manage program like the geo method.