If you can follow only one bit of data, follow the earnings - assuming the company in question has earnings. - Peter Lynch

Avoid hot stocks in hot industries. • Distrust diversifications, which usually turn out to be diworseifications. • Long shots almost never pay off. • It’s better to miss the first move in a stock and wait to see if a company’s plans are working out. • People get incredibly valuable fundamental information from their jobs that may not reach the professionals for months or even years. • Separate all stock tips from the tipper, even if the tipper is very smart, very rich, and his or her last tip went up. • Some stock tips, especially from an expert in the field, may turn out to be quite valuable. However, people in the paper industry normally give out tips on drug stocks, and people in the health care field never run out of tips on the coming takeovers in the paper industry. • Invest in simple companies that appear dull, mundane, out of favor, and haven’t caught the fancy of Wall Street.

In fact, most great investors I know (Warren Buffett, for starters) are technophobes. They don’t own what they don’t understand, and neither do I.

It takes remarkable patience to hold on to a stock in a company that excites you, but which everybody else seems to ignore. You begin to think everybody else is right and you are wrong. But where the fundamentals are promising, patience is often rewarded — Lukens stock went up sixfold in the fifteenth year, American Greetings was a sixbagger in six years, Angelica a sevenbagger in four, Brunswick a sixbagger in five, and SmithKline a threebagger in two.