When Andrew graduated from college, he founded Bradford & Reed, a company that ran a collection of start-ups. After he sold the last big chuck of that start-up, he took a long vacation, spending his days cycling and traveling. Now, Andrew runs Mixergy.com, where he invites proven Entrepreneurs to teach how they built their startups. On Mixergy, he has had the founders of Wikipedia, Groupon, LivingSocial, LinkedIn, and over 600 other fascinating start-ups.