Steve Blank is a retired serial entrepreneur-turned-educator who has changed how startups are built and how entrepreneurship is taught. Blank created the Customer Development methodology that launched the Lean Startup movement, and wrote about the process in his first book, The Four Steps to the Epiphany. His second book, The Startup Owner’s Manual, is a step-by-step guide to building a successful company. Blank teaches the Customer Development methodology in his Lean LaunchPad classes at UC Berkeley's Haas School of Business, Stanford University, UCSF, NYU, Columbia University, the National Science Foundation and the National Institutes of Health. He writes regularly about entrepreneurship at www.steveblank.com.