I found this over at CNBC's website.
" Jim Cramer is markets commentator for TheStreet.com, the multimedia Web site he founded. He's also host of the daily radio program "RealMoney with Cramer" and columnist for New York magazine. He's also a CNBC markets commentator.
After graduating from Harvard, Cramer became a print reporter. He later returned to the school to receive a law degree. Cramer helped launch American Lawyer magazine. He later joined Goldman Sachs, where he worked for former Treasury Secretary Robert Rubin. He left to manage his own hedge fund, Cramer Berkowitz." (From CNBC's Site)
He also has a few books out,
Confessions of a Street Addict - The book goes into how Jim got started into trading, and most of his trading life. It is an excellent read and one worth checking out. This is the 1st book he wrote on his experiences within the stock market.
Jim Cramer's Real Money: Sane Investing in an Insane World - This book goes into strategy for trading and investing in the stock market. Also Jim's 2nd book, it is extremely successful and gives alot of advice for those who trade on their own.