Take a deep breath! The journey of a thousand miles begins with the first step. This is a wonderful opportunity for you, enjoy it and embrace it every step of the way.
First and foremost I would prepare a small binder and have/create over time adding to them with experience, check lists for:
a) Packing up the RV And Readying To Hit The Road
b) Setting Up Upon Arrival
c) Prepping For Departure
d) Maintenance Issues, daily/weekly/monthly/quarterly/annually, as well seasonally ie; Winterizing, batteries, exercising generator, cleaning tanks, fluid levels etc.
e) Easy Prep Meals & Shopping List (some like to do this as well depending how organized they are)
Then I would go to a local location/CG for a good couple of nights or longer if possible and enjoy hands on experience testing all the different systems, appliances and so on. This worked extremely well for us being within an hour of home when we got our first ever RV. Yes we did forget things, but we were far enough away we learnt how to improvise immediately from the off. Lots of phone calls to our salesperson about this switch, that switch when we couldn't find the info in the booklets helped considerably getting us on a fast track to being RV owners.
Our dilemma's are what to do first, second and third on our bucket list when we leave the driveway!
Happy Travels.