The new UFDC FAQ is here: https://lts.uflib.ufl.edu/supported-systems/uf-digital-collections/
This LibGuide is an internal, staff guide, so user-facing documentation is on the LTS website for the initial release (and after, optimal location for users will be determined once the FAQ stabilized post-migration).
Testing should follow the format for user stories (As a [user/persona], I want to [some goal], so that [some reason]). Error reports should follow the standard process for bug reporting.
For supporting ease on basic testing, here are examples of things to test in general at the system level: