I just published this article at plone.org on Andreas Mantke, a deputy member of the Board of Directors of the Document Foundation for LibreOffice. Mantke led a workshop for new Plone site administrators in the LibreOffice community during its annual conference last week. See the full article at plone.org/news/andreas-mantke-to-lead-site-administration-workshop.
While usability testing lab software and equipment is great if you have it, screen-capture software can take you pretty far in recording usability test data and sharing it with others.