Have the dealer spend about 4hours with you going thru every operation. The big ones to learn first are about the Chassis and Coach Battery disconnects. These can cause you a lot of headaches if you get then wrong. When you pick it up make sure they give you the Owners manuals. you need to do a lot of reading of these. Believe it or not they will answer a lot of your questions. Then there is here, where we will always give you our opinion and what NOT to do because we have already been there done that.
But remember take it out and enjoy it is the most important part. Get it out on the road and in the Campgrounds where it belongs.