Get "The Weightlifting Encyclopedia" by Artie Dreschler. Simply the best book on the subject.
There's tons of video clips of champion lifters winning their medals around the internet, too, for visual reinforcement. Run a few google searches and you'll have more than you could ever need. Pay special attention to their setup at the beginning of the lifts and at what point they initiate movements (at what point do they start the second pull, how high is the bar when they drop under, that sort of thing.)
Also check out the late great J.V. Askem's website at
Lots of quality information from an amazing coach (you may notice he's the one who got WSM finalist Jesse Marunde into serious training).
The lifts are pretty technical - don't get frustrated if it takes a while to master them if you don't have a coach. Feel free to ask any specific questions when they come up, too - I or some of the other OL techie geeks will probably be able to help.