"There are lots of beginner guides to the stock market. Whilst they are all different, they are also very similar. This one goes through the main issues from what shares are, how the stock exchange works, how to invest and detail of how takeovers work. One of the more useful sections is on how to analyse the results.
I think this is a good introduction to the subject for the absolute beginner but in its later chapters it also provides some useful tips for those who know a bit about the markets and want to know more or use it as a reference tool."