This is a good book for a beginner. You can learn some very basic stuffs from this book about stock market, what is stock ?, what is FA (fundamental analysis), what is TA (technical analysis)... and if you want to learn more, do it yourself, from this site too.
http://www.investopedia.com/university/stocks/
And somethings i want to talk to beginners, if you want to learn to be an investor not only in share market but also in others instrument.
1. You need to have an investing plan. You should know where you want to go before you choose a vehicle, dont you?
2. You should prepare yourself before you make a very first wrong decision, it would be a disaster, but if you can overcome it, you could see a new world.
3. Use your investing plan to invest and dont invest as your wishes, it would cost a lot of $
4. Try to get experience when you lose (please write it down), i would help in future decisions.