Check out mutual funds (managed) and index funds. Get your feet wet slowly in something with a low risk. Don't jump into the stock market and just choose companies you like across different industries. This is a recipe for disaster.
Get started by learning about the market instead of throwing money at it. Don't invest until you know who you're giving your money to, and what expectations you should have.
Some beginner sites that helped me out:
http://www.mrmoneymustache.com/2011/05/18/how-to-make-money-...
http://www.mrmoneymustache.com/2011/06/07/where-should-i-inv...