The best way is to get the PO to go over everything with you and go out once or twice with them.
I went from a minifish to a 26' hunter. It sails the same, just handling under power will be the learning curve. Remember when you steer, it's the stern that swings around, not the bow.
If you're like me, the most difficult thing as a dinghy sailor was to learn to trust the ballast.