An open source collection of design principles and methods.
Please note: This repo is a work in progress, I've pushed it public for performance testing and feedback. Feel free to report any bugs or issues. Feedback welcome. Just remember it's not finished. There's stuff on the roadmap…
You don't need to be able to code but you will need a (free) GitHub account in order to contribute.
Here's an explanation of what an example page is comprised of.