Utøver is the Norwegian word for competitor. On this pages you find usefull information for the competitiors.
Arrangør contains information and tools for for organizers of orienteering events.
Trener/leder is a set of information for trainers, coaches and staff members of the orienteering club.
At Begynner you will find information for beginners in orienteering, basic facts about map and compass as well as information for schools and how to find your nearest orienteering club.
Competition program: http://orientering.forbundetonline.no/terminliste/Sider/default.aspx
For a total overview you can use a web-translater.
Google Translater it's not perfect, but gives you a hint!