These days you can learn just about anything from a YouTube video: tying a bow tie, playing the piano or learning math. Salman Khan, a former hedge fund analyst turned online tutor, has produced more than 1,000 YouTube videos ranging from basic multiplication of fractions to polynomial approximation of functions.
He says his Khan Academy Channel started when he worked as a hedge fund analyst in Boston and began tutoring his cousin in New Orleans. Word got around among friends and family, and Khan soon had a cohort of about 10 to 15 students.
[Source: NPR All Things Considered]
