I was asked recently about a self-educational way to learn about the stock market.  Here's what I shared

• I have used a stock market simulation game in a personal finance class I taught called Streetsage.com .  Unfortunately it had some bugs in the past and wasn't calculating stock splits correctly, so I'm hesitant to recommend it or use it again.
• When I taught the students about the stock market I used Investing for Your Future a home-based self study course.  It covers many aspects of investing, not just the stock market.
• The Young Investor.com website also has some good articles.  I used one called Primer on the Stock Market in class also.
• Finally, I leaned a lot myself from a little book called the Wall Street Journal's Guide to Money and Investing.  The library should have a copy.