Kathleen O’Grady, who spent six months as renowned hedge fund manager Ray Dalio's personal assistant, blogs about her time and experiences at the storied Bridgewater Associates:
http://dealbook.nytimes.com/2012/03/13/ray-dalios-former-assistant-tells-all/
http://dealbook.nytimes.com/2012/03/13/ray-dalios-former-assistant-tells-all/