Magazines Hyperscale - updated frequently, great articles. The Aircraft Resource Center . Makerof incredible kits. Check out their site. Yes, I pick on their kits, but they have a large selection of interesting subjects as well as online purchasing.
More recent kits are better.
ICM Models - Ukranian manufacturer, who has rapidly become one of the best kit manufacturers out there. Roll Models - Good, fast service. Dave Pluth's Japanese Aircraft site - great reference site on japanese aircraft.