"The world's largest web development site."
This is an excellent reference and tutorial site for anyone interested in learning more about web development. I'm making my way slowly but surely through the HTML tutorial at the moment. It's full of really easy to follow examples and "Try It Yourself" editors.
I've had students ask me recently if i can teach them something more advanced than scratch. I might introduce them to this site and see if they can work through some of the early examples themselves.