Academy of Model Aeronautics.  AMA is the world's largest sport aviation organization. For the AMA Membership mail in form click here. Or for an online form click here.   R/C Universe.   A favorite web site for product reviews and forums.   Tower Hobbies.  Online one stop shopping site.   Horizon Hobby.  Another online shopping web site. With links to local dealers.   Quantum Models.  John likes this vender.   FMA Direct.  Featuring Kokam LiPo batteries, receivers and a lot more.   SIG Manufacturing Co. Balsa models ,including the Wonder.   Great Planes.  Great planes web site including, aircraft models, specs and Realflight.   O.S. Engines.  Engine specs, engine details.   Spad to the bone. Simple plastic airplane designs. Corrugated plastic planes.   Model Aviation's Sport Aviator.  An online magazine for new pilots .