Source for Instructional Book or Video

A book I’ve learned a lot from is “managing 12 volts” available at vts or amazon. There is a lot of solar info there too. I’m a big fan of solar and have my camper set up with it. If you want solar maybe in the future, I’d suggest making sure your battery system is large enough. One rule of thumb is one amp hour storage for one watt at the solar panel. For example, I have two 100w panels for 200 watts, and two 6v golf cart batteries wired for 12 volts that provide a little over 200 amp hours of storage. At times it’s a little overkill, but we can boondock for days, no problem.
I have the 3 way fridge and like it. It’s a real pig on 12 volt but my panels will run it daytime in good sun, and on long road days, but we mostly run it propane, which seems to work even better than 120v, and the fuel use is minimal.
There are very good 12 volt batteries out there, but in my opinion, avoid the cheap “rv/marine” type at Walmart. These aren’t true deep storage type.
Some here probably do ok with them though.
You need to calculate your worst case amp hour use per day, times how long your out, add a little extra, and that will tell you your storage needs. And you only use off the top of the capacity.
And one more note. The portable type panels are real nice and have gotten much more affordable lately.

Hi joe, sorry I just saw your question. Yes, I think the book would help. Another source I used was the company I purchased materials from. It’s AM Solar in Oregon. All they do is rv solar.