Some additional factoids:
Feynman was one hell of a womanizer. He enjoyed patronizing gentleman's clubs during his swingin' years at Cal Tech. A former professor of mine was once taken by Feynman (married at the time) to a lounge where all of the attractive girls gravitated to him.
His first wife died of Tuberculosis a few years after they were married.
He became interested in Physics initially by tinkering with radios. There is famous quote by the physicist I.I. Rabi to the effect "Some people become physicists because they're curious about their radio, others become physicists because they are curious about their god." I don't know if this was a dig a at Feynman and his seemingly happy-go-lucky persona or not.
Feynman is widely recognized as one of the only physicists who was both a successful theoretician and experimentalist.
The Feynman lectures are damn good as a supplementary text and are helpful in reviewing old material to prepare for the Physics GRE.