Eternabond and
Dicor Self Leveling Lap Sealant are your best friend when it comes to RV roof maintenance. A small leak can cause a lot of damage if not repaired quickly.
Do a lot of reading on the forum. Use the search block and/or just post questions on the forum. Someone will have the answer.
The 12 Volt Side of Life will help you understand your RV's electrical system.
There is a lot to learn but, it's not difficult. The important thing is, don't hesitate to ask questions. The vast majority of RVers are happy to help someone with their rig.
Enjoy your RV.