Rc4wd.com Online store where you can find tons of custom stuff
Towerhobbies One of the greatest online store for RC parts
Proline Bodies, tires and wheels and more

Scale 4x4 RC Very good friendly board. Scale looking is a must here, But all RCs are welcome. Join us here.
Radio Control Monster Truck Network First forum I knew great place to talk about RC trucks.
RC Jim's Place Another cool message board
Nowinghobby.com Cool korean site (with english version even) and discussion forum.

Jugg2Driver's RC Place
Roby's Old Tamiya Database
Rc Rock
Tamiya Club
ThorBob's Garage
Craft Lab Product Design