Stick and Rudder: An Explanation of the Art of Flying
by Wolfgang Langewiesche
ISBN: 0070362408

A fantastic resource for aspiring pilots, this book describes basic elements of aircraft control in a manner that is easy to understand and, more importantly, easy to apply. A must read for any pilot!

Instrument Flight Training
by Peter Dogan
ISBN: 0916413268

This training manual is written by an instructor who taught for an accelerated instrument flight school. He takes a very consistent and thorough approach, and explains the material very well. It is supplemented with the real life examples and excercises.

The Killing Zone: How & Why Pilots Die
by Paul A. Craig
ISBN: 007136269X

The overview of the various causes of airplane accidents, along with practical advice for the new pilots on how to avoid becoming a statistic.