If you’re interested in learning more about WordPress, check out http://wordpress.tv. It’s a collection of videos about WordPress, how to do different things, how to implement different functions and snippets from presentations that people have given.
It’s a great resource that will grow with time, but already have a number of interesting things to watch. Check it out, you can never learn too much about a platform you are using. And if you’re not using WordPress, it’s an opportunity to see what the package can offer you. Much recommended.