Romanpaula,
Thankfully more women are driving their RVs these days and I'm pleased you'll soon be among them! I've been driving ours for many years. When we moved up from a 30-foot Type C to a 34-foot Type A diesel pusher I drove the first 1,200 miles while my husband read the manuals. Then we moved up to a 40-footer and we also tow a car. I've LOVED driving them all! When we got the first DP we both took the **** Reed Driving School and it was worth every penny. Even though we had driven RVs for many years, we got lots of good pointers from their trainer. I probably drive half the time so I know you can do it.
You've already gotten lots of good advice. A good time to find an empty parking lot is on a Sunday morning before the shoppers arrive. A big shopping mall is good. Wal-Marts and grocery stores sometimes have small lanes or landscaped islands that make practicing more difficult. You need one that is wide open so you can make big circles and learn your turning radius.
Others have talked about width and turns. You also need to know how tall you are because you don't want to clip a gas station overhang, confront a short overpass, or get stuck at an old bridge. Really old tunnels also might be rounded on the ceiling so you need to know your height, including the air conditioners and antennas. A CB antenna will bend, but a satellite won't so go up on the roof and take a good look around so you know what's there. Sooner or later you'll have to do that anyway if you're going to be the primary caregiver to this RV because you may need to unhook a stray branch, clean off something, or check caulking. Personally I avoid ladders after a broken elbow falling from one and I'm not fond of heights either, but I can crawl around up there to do what needs to be done. Don't worry about how you look - just do it the way you feel comfortable and if that's on all fours, so be it.
At least it sounds like your husband has been doing everything so he'll be able to teach you a lot. I've always learned how to hook and unhook in case I ever had to do it on my own. I've only had to do it once and that was before we had a toad and I had to drive my husband to the airport for an unexpected trip.
Good luck, relax, don't worry about it, and have fun.
ArdraF
