This link is more about setting up courses for kids.
http://www.us.orienteering.org/OYoung/
But it has some good tips.

The Boy Scouts have a good page with fairly good links to more information.
http://www.scoutorienteering.com/index.htm

These two are U.S. Orienteering Federation North American and Orienteering League related
http://www.us.orienteering.org/
http://www.attackpoint.org/links.jsp

You will also find a few collections of Powerpoint presentations
for an example even though it is a bit more military oriented:
http://www.pptclasses.com/category/index-nav.htm

The Geocachers talked a bit about this in Groundspeak Forum.
http://forums.groundspeak.com/GC/index.php?showtopic=183133