Lots of people seem to be afraid to get in there & get their hands dirty.
Water leaks are easy to find. It is where the water is coming out of the pipe.
12V DC works like the water system. It is one way & the battery is the city water source. Always start there, then the fuses/DC circuit breaker panel if lucky enough to have one.
110AC is a little more complex but can be figured out with the help of a multi tester.
Gas leaks: Have liquid soap will find em.
If internet is not always available you can't go wrong investing in a couple really good RV maintenance/repair books. 1 hour of unneeded tech time will pay for them. Look for the fulltime camper in the CG. Here is the guy with the best knowledge & tools. He has had everything that can possibly go wrong happen & has figured it out for himself.
If you ever want to do something more than a weekend warrior like go to Alaska being self sufficient is very helpful. There is no roadside assistance smiling at you in half an hour. Heck, there is not even any phone service for very long stretches of the road.
