In the following video, Motley Fool Million Dollar Portfolio advisor Ron Gross takes a question from a Fool reader, who writes:

My 13-year-old son has become very interested in investing. He's doing lots of research, watching the markets, etc. What is the best way (with supervision) to get him started? He has several hundred dollars (all earned through small jobs) saved that he is willing to invest. This money is separate from his own savings and the college savings we maintain for him. He understands the risks.