User and technical documentation can be found at Confluence wiki: https://caribou.iisg.agh.edu.pl/confluence/display/jagedocs/Home
Installation and start-up guide is described also at wiki on Installation page. Read other instructions from Development process documentation before you start to develop the project.
Details about source repository are listed at Source Repository page.
Issues, bugs, and questions should be sent to the project mailing list described at mail lists page. If you want to receive current information about the project subscribe to the list. You can also send individual messages without subscription.