How Do You Learn How to Trade Stocks?

I think familiarity with companies, it gives you an edge right away, because you know what you're trading. And it keeps you away from a lot of the wild moves that happen every day. So I typically don't like to trade those crazy stocks that are up 100, 200% of the day,. The shiny objects, so to speak. He'll wait for them to settle away for other traders to figure it out. Then he'll come in and see where it's at.