My advice to anyone who wants to learn how to knit is to go online and see what you'll need to get started. if you don't have a computer go to your local library and check out some books. Then when buying your supplies pick out a simple color or a color that you like make sure that you get the normal size ball of yarn and not any of the thick, heavy, bulky or large ball's of yarn wait until you get better at knitting. Now for the needle's when staring out I'd start with a size 8 because there easy to use when starting. Now I can't actually show you how to start knitting but I can give you the link on where to go Here it is
http://www.wikihow.com/Knit
This site helped me out a lot and I hope it helps you out too.