To install/setup the system from scratch, go to the Installation Guide
For all things related to how to use the system through the front end, go to the Manual
For troubleshooting common issues and implementing solutions, refer to the Known Limitations and Workarounds
For a system that is already up and running that you want to make changes to, go to Maintenance Suggestions
For API documentation, navigate to server/docs
and open the html files in your web browser of choice.