R/C cars has been my interest since I was 8 years old. Being that I am 14, I have some experience. For anyone who is just starting R/C, I would recommend electric. They're cheaper to buy, maintain, and run than that of gas powered.
The Best Web Sites to get you going:
Team Losi - Fine Makers of Quality Racing R/C Cars
Team Associated R/C Race Cars
The Finest Hobby Shop Chain in So. Cal, Hobby People!
R/C Tech - Forums For Answers To The Toughest Questions!