postcss.org
The official website for PostCSS built by the community for the community
Gitter
We use Gitter[?] to keep each other up-to date on what's going on with the current status of the project as well as status meetings. You can join our Gitter channel here
Contributing
Please read through our contributing guidelines to get started working on postcss.org and once you are done reading the guidelines, feel free to take a look at the issue tracker from Milestone 1.0 and start hacking away at something!
There is a bunch of documentation on how to work on postcss.org in the docs/ folder, Getting Started is a good place to begin!