Read lots. "The Intelligent Investor" by Benjamin Graham is a really old book but one that gets recommended a lot. Have a search around on amazon for stock market for beginners type books.
Investors Chronical is a monthly magazine that i have read before which is quite good.
The Motley Fool website
Join some investment forums.
Some online stockbrokers have practice accounts so you can try out ideas before pumping any of your own cash in.