Learning Web Standards with Opera

Web Standards have never been easier to learn. Everything you need
to know is condensed into short, helpful tutorials that inform and
inspire. Opera’s Web Standards Curriculum can help you brush up on
things you know and maybe even teach you something you didn’t.

Opera’s Web Standards Curriculum,
released in association with the Yahoo! Developer Network, is a
complete a course designed to give anyone a solid grounding in web
design/development, including HTML, CSS, design principles and
background theory, and JavaScript basics.

It is completely free to use, accessible, and assumes no previous
knowledge. 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.

Source: Opera Web Standards Curriculum