Hi Steve and congrats on your new to you toy!
Welcome to Fiberglass RV.
You have quite a few questions. Phew! The best place to begin is to run searches on each sstem you are curious about. There are many discussion and threads here about ALL your inquiries! Some have short answers, some could go on forever!
Any idea where I can get the instructions for all the items?
A good place is right here! Our document center has many many manuals and individual items outlined in it. Look thru Here
and see what you can find.
I'll take a stab at your heater question..yes, they are fairly easy to use, but check to see if your manual is there. Using one wrong can result in.. er, Scrambled and burnt egg. Usually they just have an ON switch and a thermostat.. walla.. they work like your home heater for the most part. Others have pilots to light
. Not knowing what you have, it's hard to say.
The electric needed for your fan can be substantial depending on your unit. Others.. not so much. My cat heater fan can run for a couple days with no impact on a FULLY charged battery
Once again, have a looksee thru the Doc center and see if that helps. Calling Scamp
and asking if there is an owner near you may help too. They have a list of folks willing to show thier trailers and they may be happy to explain thier systems to you.