This article will pull apart the templating system and make you a WordPress Grand Wazier or your money back! (Not really on the money back.)This looks like some good reading.
We'll look at:
How to install new templates ("themes") or make your own
How all the various template files fit together
How to navigate the PHP code that pulls in content (even if you don't know much about PHP)
Where to find WordPress plug-ins
via [ RConversation ]