One option is to start asking your questions on the forum, someone will have the answer.
If you need someone to show you how to work everything, consider hiring a mobile RV Tech. They could show you how everything operates while inspecting your rig.
The Tech could point out problems or potential problems that will need to be addressed at some point.
Call a campground in your area, ask if they have a list of local mobile Tech's.
But, don't be concerned about asking questions on the forum. There is a lot of information and experience available. Most members are happy to help.
Enjoy your travels.