Surprisingly, my first investment vehicle was a savings account. I wanted to save up money so that I could buy a car, so I started putting $50 a week into my savings account and then spent some of the money on something fun. When the car was paid for, I put all of the extra money back into the account. That way, by the time I graduated from high school, I had enough saved up to buy a really nice car.
Now that I'm older, I invest in stocks and bonds because they have more potential to grow than savings accounts do. But even though there's more risk involved with investing in stocks and bonds, it's still important not to invest too much of your money in them—you need something safe in case things go wrong.