Dear Lifehacker, I’ve built a decent amount of savings over the years and I’m ready to start investing some of it. I’ve heard I should put some in the stock market, but all I really know is how to look up a company’s symbol. How do I get started investing? What do I need to know? Dear Lost, You’ve already made a good move by asking. While it’s certainly possible even easy to make money investing in the stock market, it’s also possible to lose really quickly if you don’t know what you’re doing.