Oh, I left out one thing. I suggest that you find a good local hobby shop (LHS). A good LHS is the best place for a beginner to buy because they will have lots of useful information, can be helpful when you have questions about assembling your plane, and can put you in touch with local clubs and instructors. You also can go to the AMA (hopefully you've heard of them) club locator at:
www.modelaircraft.org/clubsearch.aspx.