My partner and I also recently bought a camper....Rockwood Mini Lite. We also found that those at the dealership give a lot of lip service and misinformed us about several things. We did a lot of tent camping prior to our purchase and we have just slowly evolved from the tent to the camper.
We did a lot reading on the internet and found really good info (and of course some not so good). We have been on 2 short trips and have learned a great deal, especially from asking other RVers. They are very friendly and usually will give lots of information.
Short trips, like one or two nights help out a great deal.
Good luck and enjoy!