These world-class businesses have massive advantages and show no signs of slowing down. The key to successful investing is to buy the right stocks at the right price and hold them for the long term, allowing the businesses to grow and the stock price to rise. This is an obvious statement, but it is easier said than done. Because we can't know the future, buying the right stocks is always going to be left somewhat to chance. That said, there are characteristics to look out for before clicking the buy button. ...