Yup. Also, he had Lean Startup groups throughout the country that helped promote and sell the book (and Lean Startup vision). Also, he gave up his speaking fee

Yup. Also, he had Lean Startup groups throughout the country that helped promote and sell the book (and Lean Startup vision). Also, he gave up his speaking fees and asked event organizers to sell books instead. Also, he found a way to bundle book sales with ticket sales. Also, he had a proven idea.