Opera have just released the Opera Web Standards Curriculum. Here is the blurb from the site:

Learning Web Standards just got easier. Opera’s new Web Standards Curriculum, released in association with the Yahoo! Developer Network, is a complete course to teach you standards-based web development, including HTML, CSS, design principles and background theory, and JavaScript basics. It already has support from many organizations (including Yahoo! and the Web Standards Project) and universities. The first 23 articles are currently available, with about 30 more to be published between now and late September.

This looks like a great resource for beginner web developers and experienced ones alike.