For me, i use essentialsgroupmanager since it is easier to set up ranks and permissions.
You can download it here:
wiki.ess3.net/wiki/DownloadsTo add simple permissions for Guest, for example
essentials.sethome would give the group Guest permission to set a home somewhere.
so you would do: /mangaddp (group) essentials.sethome
For other plugins, such as factions, you would do:
/mangaddp (group) factions.create (to create a faction)
Hoped this helped !