I have now been using this site for quite some time and appreciate the tutorials presented and the try it yourself examples.
Would it not be great if we would develop a website with as far as HTML and then HTML5 could take us and then use PHP to add new features and/or Javascript etc. This would help us see where we are going with our learning. Of cource not every feature can be used but much can be covered if a good example complete website is chosen in a more interesting way.
The only thing I dislike about this site is that it starts to feel more like a manual than a tutorial after a number of lessons.
I beleive suggestions and techniques can also be better covered this way.
Regards