This is where you will be able to find the documentation of The Good Suite. However, the project is currently severely underdocumented.
Among the goals for the first alpha release is that an API documentation will be created that can then be hosted here. Soon after that, a usage guide should be created and appear here as well. Finally, it would be good if some tutorials could also be created to help people get started.
There will also be a second API documentation, which documents the internal API and is meant for those who are working on the suite itself rather than use it. As such, it won't ever be found here, but on the Get Involved page instead.