Damian
I was same as u as I didnt know anything about solar systems so started with getting online and searched for forums dealing with solar,, I found info on tear drop trailers,, as they had a sub forum on cargo trailers being converted into campers as im doing and wanted as much power I could get knowing I was gonna be. Boondocking a lot and using a lot of power,, sat tv, dvd, microwave, ele skillet etc,, lol,, all the stuff I use at home!
First u need to figure out how much power u will be using and then plan on using more
The kits I've seen will not allow on much expansion so dont waste ur cash
I started with ebay
Two 230 watt panels=$600.00 including shipping
A coleman Air controller=$175.00 which allows me to add panels an also add a wind generator
Four interstate 6v batteries that are 210ah's each=$320.00 bought from local golf cart company
A 2500 watt dc to ac inverter off ebay for $50.00 and plan to buy a smaller pure seinwave inverter to run hi end electronics
I could of done it cheaper but wanted the ability of wind power being on the gulf a lot and the 230 watt panels are more expensive as they are used on houses mainly and are 5'x2.5' but am mounting then on top of cargo trailer so went with as much power as I could get from the area I had to mount
So for $1200.00 or as low as maybe 700.00 u can set up a system
It really just depends on where your gonna be using this system (how much sun ur part of the country gets) an how much power ur gonna need to run ur rig
Like I said I didnt know anything a now I've got a grasp on it enough to buy and install my system
Also ur gonna need some fuse's, breakers in ur system and those can be alittle pricey but very very important!!
I hope u find the info ur needing,, and would be glad to help with any questions,, good luck!!