Well Jerry welcome to the Forums. It can be a real exciting membership with one or two somewhat curt folks in the mix. For the most part the forums are a vast source of knowledge. I think the comment about selling your rig and taking a write off may be a little hasty but has a modicum of truth to it. Leaks are the bain of RVs and it might behoove you to have it checked out. Personally I think it's a great opportunity to break into the RVing world and experience live on the road.
Two great bits of advice you have received are read the 12 volt Side of Life and there are some great videos on youtube.
Not knowing your background and how much of the repair and maintenance you're willing to take on, it's hard to suggest you by this tool or that tool or read this book or that one. As we get to know you, we will learn what suggestions to make to help you out.
At this point, I would suggest you learn everything you can about the day to day maintenance of both the house and the chassis. There are a lot of things to keep track of. Remember to carefully inspect your batteries. Make sure connections are clean and tight, learn the difference between an Inverter and a Converter, learn where the converter is and where the AC and DC breakers and fuses are. Search the web for manuals for anything you don't have one for. Read the stickies under each Forum heading. Learn how to post photos and how to put one in your signature and read what ever you can find regarding your rig and features.
Welcome and Hope to see you on the road.
Please learn to use the Preview button in the tool bar at the top the this box, don't be like me, post and then correct. They had me broken of that habit but I'm back doing it again.