Steve Blank is a retired serial entrepreneur-turned-educator who is changing how startups are built and how entrepreneurship is being taught. He 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: The Step-By-Step Guide for Building a Great Company, is a step-by-step guide to building a successful company. Blank teaches the Customer Development methodology in his Lean LaunchPad classes at Stanford University, U.C. Berkeley, Columbia University and the National Science Foundation. He blogs about entrepreneurship at steveblank.com.