If you know very little about stock market then it is time to start reading a few books and try to learn a little more. The list of books which are good for learning investing have already been shared earlier in this thread.
If you have to read only a couple of books , then read One up On wall street by peter lynch, How to make money in stocks by WIlliam O Neil, Five rules for successful stock investing by Pat Dorsey. And read them multiple times till you grasp the full meaning of the book.
Learning only by asking questions on valuepickr threads will be counter productive. You will first need to read a few books and digest them.