The best way to get started in investing is with a top performing no load diversified mutual fund. I have studied this very carefully and in my opinion the top three mutual fund companies are Vanguard, T Rowe Price, and Fidelity. These are no load funds, meaning, you are not charged a sales commission when you invest in the funds, which will save you 5.75 percent of each purchase, And the expense ratios are very low, meaning the fund charges you a relatively small amount to manage the fund. Each of these three funds are extremely highly regarded in the mutual fund business for their management expertise, historic performance, and low cost for the investor. Each of these three companies has a broad selection of mutual funds in various sectors of the domestic and international market. If you can average 10 percent return per year, your money will double every 7.2 years, and these funds perform at this level and better historically.
Good luck. Start young and let it grow. You won't need to work after you are fifty if you are dilligent in investing.