They’ve got a pretty dull-looking website, but W3Schools have scores of useful X/HTML and CSS tutorials, references and code examples. They also have a validation tool that you can check your code with and find out where you went wrong, but unlike the W3C’s own validation tool you can only check live web pages.

Favourite Website Awards is an inspirational resource, home to a database of thousands of award-winning websites that only make it to the site if they’re up to scratch. The FWA is a great site to check out for inspiration when making your own stuff or to find out what’s possible with the latest technology. They also have profiles of the design companies responsible for the sites listed, interviews with people in the industry and desktop wallpapers that you can download for free.