RE: Where do I begin?
Welcome to RC, where you go with the hobby is up to you.
Winter is tough, but spring comes and things will start to pickup. Hopefully there is a local club and active fliers you can hookup with. They will be your best resource.
Threads here are helpful, to a point. Trouble is, it can be hard to tell the wheat from the chaff.
I would avoid the temptation to run the engine. Experience goes a long ways here, and if it already has a few flights on it, then it really doesn't need bench running.
You might want to get a simulator, or maybe an indoor micro helo to pass the time till spring. The main problems beginners have is the left/right thing in the air, running engines, being patience to wait on good weather and their instructor.
Keep reading and asking questions. Soon enough you can bake some bread.