Newbie a little nervous about driving a class a

Find an large empty parking lot and have an assistant with you. Set up cones and set them up to test:

How close you can get to them and be able to turn left and right without hitting them. Mark the spot on your windshield where the cones need to be before you make your turn.

Practice backing into a slow, like you would back into an RV spot.
Before you go, check out these videos:
Lazy Days Videos