Information and User Guides for FOLIO Apps
Check out http://docs.folio.org
The community is sharing release-specific documentation at docs.folio.org. Make sure to check that out if you are looking for the most up-to-date documentation for specific apps.
Documentation for Specific FOLIO Apps
Apps keeping their most up-to-date documentation on docs.folio.org:
Some apps keep a standard set of documentation on docs.folio.org but also maintain more informal documentation linked below.
Tips for Community Members
Dive Deeper
Working with FOLIO APIs