Go to the "FAQ's" page too. There's So-o-o much stuff here on RCU, you just won't believe it! You could read for weeks and not run out of great info.
And you still might be confused...
If you want to get the "basics down" Spend an afternoon at the local club you'll learn more in that afternoon then here or anywhere else on the 'net
Some examples include
Where to shop and where not to shop in your area
Who to take advice from and who not to!
Radio brand that most everyone uses (great for help and buddy boxing) and the channels that are most popular.
(think stay away)
How to tune and set up your engine and plane correctly (especially learning how to hear a lean engine run)
the list goes on but you get the point