Hold no more stocks than you can remain informed on.
Never buy anything that you can't illustrate on the back of a napkin.
If you have the stomach for stocks, but neither the time nor the inclination to do the homework, invest in equity mutual funds.
My method for picking stocks has never changed. When businesses go from crappy to semicrappy, there's money to be made.
The real key to making money in stocks is not to get scared out of them.
I deal in facts, not forecasting the future. That's crystal ball stuff. That doesn't work.