Back in 2004, Salman Khan just wanted to help his 13 year-old niece learn math. Today, he has his sights set on helping anyone learn anything, for free. Bill Gates and Google are supporting the effort, too. The Khan Academy has video tutorials covering Math, Science, History, Finance and many other subjects. You can even find test prep for college entrance exams such as the SAT and GMAT. Visit khanacademy.org to learn more about this excellent online learning resource…Bob Rankin

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