Marty Boardman, editor of Freerealestateeducation.com, personally recommends these books and audio books:
The Classics:
Think and Grow Rich, by Napoleon Hill
The Science of Getting Rich, by Wallace D. Wattles
How to Win Friends and Influence People, by Dale Carnegie
Lead the Field, by Earl Nightingale
Biographies:
Racing to Win, by Joe Gibbs
The Snowball: Warren Buffett and the Business of Life, by Alice Schroeder
Business Development:
The Science of Influence, by Kevin Hogan
The E-Myth, by Michael Gerber
Rich Dad, Poor Dad, by Robert Kiyosaki