I'm not new to Web design, but I am utterly new to interactive, database-driven Web design. I have a blog up and running on WP, and it's okay, but I know it has the potential to be much better. I'm comfortable with HTML and CSS, but I know that's not enough to get the most out of WordPress.
What do I need to learn to make the most of WordPress, and my site? I want to learn. I need to learn. Point me in the right direction?