Getting started in RC Flying Airplanes by Quick Tech Hobbies

You Can Fly an R/C Airplane by Tower Hobbies

This is a very good place to start.  This page should answer all your questions including how much will this cost me and what do I need to buy to get started ect.

Learn about the different types of Airplanes by Tower Hobbies

The R/C Dictionary by Tower Hobbies

Join the Academy of Model Aeronautics