This is our monthly Designer & Developer Advanced WordPress Meetup.
Discussion in Theme Design, Plugin Development, advanced Security, and other more advanced elements to WP.
You'll probably want at least a basic understanding of HTML, CSS, and PHP to get the most out of the Advanced Meetups. Feel free to give it a try if you're on the fence and you can also attend the User meetup to see where you feel more comfortable.
If you're looking for something directed towards content editing, blogging, and less development based elements to WordPress, try our User Meetup running every fortnight to this one.