Like mention by an earlier post, "The Savvy Flight Instructor: Secrets of the Successful CFI" is invaluable. It is one of the best books I've ever read about flight instructing. Really gets you motivated to get out there are teach people to fly.

But here are a few of the books that I have used and found very useful:

• Instructional Methods for Flight Instructors
• Flight Instructor Notebook
• ASA Virtual Test Prep DVD - CFI

Hope these help!

Regards,

Jeffrey