"A new spin on the perceptions, procedures, and principles of flight";

Love this site! John Denker's online book, "See How It Flies", gives an in depth and interesting (to aviation enthusiasts especially) look at how an airplane flies and how to make one fly better. As he puts it, "This book is intended to appeal to pilots and everyone else who is interested in how airplanes behave. The idea is to concentrate on ideas that are useful in the cockpit, and to explain them as clearly as possible." If you're looking for more information on how and why an airplane flies this is a great place to start. It's coverage is limited to actual flying and not to pilot/ controller operations. As he puts it, "It explains things at a nontechnical level that should be accessible to almost everybody".