If you would like your children to grow up to be millionaires, they could get some advice from one of America's richest men.
Billionaire Warren Buffett is sharing his guidance on a website called "Secret Millionaires Club".
Buffett is the world-famous investor and head of Berkshire Hathaway. According to Yahoo, he's part of a website that shares investment advice and information on some of the basics of good business. It's geared toward children, with webisodes and DVDs.
Warren Buffett plays himself, and he's a member of the club.
Some adults may be interested in joining that club as well. Here's a link.