You can trade the free simulator at Investopedia. They also have good tutorials and financial definitions.
http://www.investopedia.com/simulator/
Answered a similar question here:
http://answers.yahoo.com/question/index?...
TD Ameritrades "Think or Swim" will give you a $100,000 portfolio of play money. You can trade options or stocks on it.
I am new to investing and I thought it would be fun to practice. Is their a website where I can invest fake money into a stock and see how I do?