[UpFromTheGut]

This is an excellent guide for beginners, and gives a good understanding of how pin tumblers work (and a few other types of locks). Also, there is a good survey of tools and their particular uses. If you are interested in learning about lock picking, read this guide and go down to your hardware store and get a deadbolt to practice on. You can make your own tools, but if you're lazy, Southern Ordinance is a great retailer. Good luck!