Seems that buyers of new and used RV's are often clue-less about their RV's electrical system including: How to start and run the generator, emergency start switch, the automatic transfer switch vs plugging shore power plug into generator, the auxiliary battery on/storage switch, how to start and shut down the roof AC unit on shore power or generator power, the converter charger and what it does, house battery electrolyte levels, and battery connector maintenance, 12 volt fuse panels, 120 volt circuit breakers, Use of simple multi-meter to check battery voltages and charging systems, inverters and what they can and can't do. Basic troubleshooting and when you need to get professional electrical help.
If the above has been covered elsewhere in an easily understood manner, a link(s) to it may be enough in the Frequently Asked Questions sticky. Maybe this topic deserves it's own "sticky".