Anthony Hobday is a product designer and I like his approach of cataloging and sharing references on his website. Here are some choice pages:

• Uncommon, but useful design terms
• Notes on software quality and What is good craftspersonship?
• Notes on visual design and Visual design rules you can safely follow
• How interface changes with frequency of use
• Every interaction design concept and Every visual design concept
• Various interface design classifications
• Notes on design books

I admire this kind of rigorous practice, and if you’re doing that on your own, please consider sharing it with others, too! (And please consider letting me know.)

As a reader, I find these fun to go through, as they light up different parts of my brain than most of other design resources.

I probably missed some on the list above, so check out the entire site. (For example, Hobday also has a list of lightly categorized bookmarks and quotes about design.)

I added a new reference tag to capture resources like these.