I started my software company forty years ago with $2,000 and built it into a multi-billion-dollar value with no debt and no venture money. That's right: we never had any debt; we never had any venture money. Not many people have done that, but if I were to start all over today, I could do it again. I want to tell you how I did it, and how you can, too. I was a very unlikely entrepreneur. I went to college and graduated in mathematics. I never had a course in business, never had a course i...