As a teenager, how can I begin investing my money?
A safe way to invest would be to put your money in a low cost index fund. These funds will essentially follow what the market is doing. If you invest in the S&P 500, DOW, Russell 2000, etc, for example you should make 7–8% per year over the long run. The important thing is to keep putting in money on a consistent basis. (bi-weekly, monthly, every 6 months, etc.). By doing this you aren't "timing" the market and your investment will do well in the long run. You don't even need to pay attention to what the market is doing. It will continue to grow in the long run. When the market crashed in 2008 many people lost a lot of money. If you don't panic when this happens and keep putting money in on a consistent basis your money will eventually come back. A market crash really only hurts you if it happens when you are ready to pull out your money to pay for college, a house, a wedding, retirement, etc.