Free online school: http://www.khanacademy.org/ ;
Salman Khan, graduated from MIT, then Harvard business school,went on to be a hedge fund manager and was making big money.
In his thirties, he gave up his career and started posting free math and science teaching videos on youtube for millions of students around world to watch. He makes no money and records his videos from a converted closet out of his master bedroom. It is amazing what one man can achieve with determination.