Understand the difference between investing and speculating, learn the concept of Return on Investment, and get to know basic guidelines for buying stocks at reasonable prices - all in 3 minutes. To learn more about investing, check out these books:
http://www.amazon.com/Essays-Warren-Buffett-Lessons-Corporate/dp/0966446127
http://www.amazon.com/Five-Rules-Successful-Stock-Investing/dp/0471686174
