What's the secret to writing a book that requires little to no marketing to sell hundreds of thousands of copies and put millions of dollars in your pocket? That's what we're talking about today. Today's book on the 52 Book Challenge is Write Useful Books, A Modern Approach to Designing and Refining Recommendable Non -Fiction by Rob Fitzpatrick. The 52 Book Challenge: https://youtu.be/h3Fo9P4-su0?si=jNxCzvLdNZ6n-5KC