AMA:
Academy of Model Aeronautics, our governing body for safety, insurance and a wealth of knowledge about the RC Hobby and it's various attributes
Anything RC:
As the name implies, this site is for anything RC related, cars, trucks, boats and airplanes. Dave is working on compiling a site dedicated to the hobby, complete with links that would be of interest to the RC Enthusiast
eBay:
Yes, eBay. If you haven't looked on eBay for parts, planes, engines or anything else you are looking for - you are missing out!
e-flightline.com:
Carries a varied assortment of parts, planes and gear for electrics
Hobby-Lobby (Int'l):
Mostly electric plane related items, but a good mix of parts, kits, and accessories
JustGoFly.com:
Carries a varied assortment of parts and gear for electric planes of all sizes, from foamies to Giants. Electric motors are hard to beat and priced VERY competitively.
King R/C:
Airplane Kits (yes, kits)
HobbyCity.com:
Located in Hong Kong, extremely low-priced R/C related products. Shipping times, no so great, but if you can wait and are okay with imported materials this is a site to look at
Maxamps.com:
Batteries, Chargers, Accessories
New Creations:
Carries a variety of parts and kits for electrics
NitroPlanes.com:
Plane kits (ARFs) and accessories. Low priced, mostly CMP (China Made Products) planes
TowerHobbies.com:
Pretty much one-stop
shopping for the RC Hobby
Uncle Willies Plans:
YES, PLANS!!!
Uncle Willies Plans Site 2:
Second site, additional plans....
WarbirdKits.com:
"400" sized balsa kits of, as the name implies, warbirds
RC Related On-Line Discussion Groups
RCGroups.com:
One of several RC Discussion groups
RCUniverse:
One of several RC Discussion groups, also has a "blue book" feature for the marketplace, which is very useful for looking up what you want to sell, or check to see if what you are looking at is priced correctly.
Wattflyer.com:
RC Discussion group for electrics-only
Nitrokillers.com:
RC Discussion group for electrics-only - sponsored by Maxamps.com