take a look to http://www.nethserver.org/dokuwiki/doku.php and report issues, enhancements
I did several categories (tags) http://www.nethserver.org/dokuwiki/doku.php?id=wiki_help#categories , you can retrieve them in the left menu.
I did a help page http://www.nethserver.org/dokuwiki/doku.php?id=wiki_help
you can embed videos http://www.nethserver.org/dokuwiki/doku.php?id=nethserver_installation_and_configuration_video