Build a Module.com is an extensive and ever-growing library of video tutorials for Drupal. It covers a broad range of topics aimed at both "site builders" (no coding) and developers. As the name suggests, the site began with a strong focus on PHP developers who needed to learn how to develop on top of Drupal. Over time, as there were more and more requests for more basic, non-coding tutorials, videos were added to allow a non-developer to build a fully functioning Drupal site from start to finish. Drupal is powerful enough to create a rich, customized site without ever looking at the code, so it made a lot of sense to add this kind of material to the library.
There are over 520 videos in the library, adding up to more than 45 hours of material. And the videos are good. They're clear enough that viewers get concepts quickly and enjoy the experience (scroll down to see a hundred or so examples), they're concise enough that watching a single video is always a reasonable commitment, and they're organized well enough so that even after a viewer has watched through the entire library, they can easily use it for reference and review.
Build a Module.com has been around for over a year now, and has a loyal customer base. New material is being added all the time, which encourages naturally-paced ongoing learning. The videos are being used by major educational instituations, web development shops, and by training companies. Freelancers and those preparing for the leap into a Drupal-based occupation are using them to get up to speed.
The Build a Module.com site provides a rich interface for working through the videos. It tracks completed videos, allows you to generate playlists, and puts the entire library on a single page so it's easy to navigate through the library. It's improving all the time with suggestions from viewers.