Warren Buffett became a player in the investment game at the wee age of 11, eventually using cash he earned from his paper route to buy some farmland in his home state. As a high school sophomore, he also reaped the rewards of a booming pinball machine business. By the time Buffett was 15, he already had a net worth of about $6,000. According to the latest Forbes count, the so-called Oracle of Omaha is currently tipping the wealth scales at $73.1 billion. That’s good enough to put Buffett, who turns 87 this summer, at No. 3 on the U.S. rich list, behind Microsoft’s Bill Gates and Amazon’s Jeff Bezos. (marketwatch.com)