I was just browsing through CodeAcademy right before I loaded up this post. :P I still have yet to use it.
Have you checked out any of the PHP/MySQL lessons? If so, are they any good? I'm currently trying to learn PHP. I have a basic knowledge of the language but still have a ton to learn. I'm looking for some intermediate level lessons so I can continue developing this web application I have planned out.
Codecademy.com: I clicked on the HTML & CSS link at the bottom of the page. This was so basic an HTML tutorial it was really, really beginner level. No way this tutorial would take 7hrs to learn. It was devoid of any CSS tutorial. So am I missing something? Is the tutorial more complex when you are logged in?