Follow John McAfee on Twitter he announce one good Coin in one week
I'm not sure if following McAfee is the best way... when he announces some coin, you'll be already buying into a pump, which is rather dangerous.
It's always best to research a coin and check if they have good and active developers, a supportive community and a good roadmap (and if they did follow the roadmap in the past). If all this looks good, there's a very high chance that the coin will moon sooner or later.