Mark Cuban grew up as a blue-collar kid in the working-class city of Pittsburgh. His business career began when he was 12; he was a door-to-door garbage bag salesman who eventually graduated to greeting cards, magazines, and liquor. Cuban put himself through school at Indiana University, choosing it because it was the cheapest of America's top 10 business schools. While there he continued his entrepreneurial drive by giving disco dancing lessons and starting a chain letter (the profits from the letter paid for an entire semester's tuition).
