We're pushing out a lesson on Color Theory on Monday, then David Kadavy (author of Design for Hackers) is up the week after. We've already got 4 months of great content so far, and 8 more to go.
Let me know if you try it out - @wr on twitter.
Abusing the buzzword 'curated' though... :-)
But we really need everyone to understand good design theory, at least at a basic level. It streamlines the development process, and it may even prompt a few developers who hadn't really thought about it to do a little more with design.
What I love about Hack Design is that it is free and very casual, which means I can look into it in my spare time because of my own interest and motivation, without any investment and without any risk.
Also it should be noted that the course is largely comprised of a curated set of already-out-there blog posts, articles, tools, and other materials. Curated is the active word there; it's like a guided tour of the design community. The toughest thing about getting started with any new area of learning is knowing where to start, especially with something so vast and foreign to many of us as design. Having someone to point you in the right direction, let alone guide you step by step through the entire foundational process, is a huge leg up.
Okay, I'll stop gushing now. I just really enjoy and appreciate this course.