Allegedly retired serial entrepreneur, co–author of The Startup Owners Manual. Bob Dorf is likely the second most knowledgeable Customer Development expert on the planet, second only to its developer and Godfather, Steve Blank. Together the two spent nearly two years conceiving, outlining, drafting, rewriting, and revising the global bestseller, The Startup Owner's Manual, now a business bestseller in the U.S. and many countries around the world. A serial entrepreneur, Bob left a lucrative broadcasting job at the age of 22 because he had a passion to start his own company, which he did seven times over three decades. Bob’s track record as a founder, as he says: “two home runs, two base hits, and three great tax losses.” Bob invested in and coached or advised more than two dozen startups over more than a decade. Seven of them IPO’ed, while six went “straight into the toilet.” In all, he says, “an incredible 42 year entrepreneurial education!” In March, 2012, Bob published The Startup Owner’s Manual: A Step–By–Step Guide to Building a Great Company, along with Steve Blank. Two years of virtually fulltime research and development yielded his magnum opus: 608 page, painstakingly detailed guide is the most comprehensive, rigorous step–by–step roadmap that is guiding startup founders throughout the world. The Owner’s Manual offers parallel Customer Development pathways for companies in the web and mobile channels, as well as traditional physical goods and enterprise software startups; it also includes indepth web marketing tutorials. He teaches Customer Development and Business Modeling in full-semester and week-long classes at Columbia Business School, where he is an Adjunct Professor of Entrepreneurship, and has led training sessions at Tech de Monterrey, Mexico, Skolkovo Business School in Moscow, and many other places around the world. He’s counseled dozens of nonprofits probono as well, including the legendary Acumen Fund, a sustainable venture fund.