Ok....buy the kit online and do the install with a bit of help from the Tribe here. Save some money to have fun with. You can do this and when you're finished you'll know and understand your system, which is important.
Let's begin with a couple basic questions.
First, what are power your needs? Are you going to run something like a fridge, or things like a 12V blanket? Laptop, etc? What else do you see in the immediate future in your use plan?
Some get by on a single house battery and one 100W panel for light loads.
Some start with that and build on it as they need or can afford more.
There are different levels of "entry" here too.
A basic system can consist of a battery, a panel, simple (like Renology's kit) controller, a solenoid, some wires, and a small inverter.
A more advanced system has a fancy charge controller and higher dollar inverter, more batteries and panels.
So, the the bottom line is how much power and how much ya wanna spend.
Either way, self install is much cheaper, and again, you'll know your system and how to properly maintain it, thus getting the best bang for your buck.