What can you do with a permanent orienteering course?  Since it's always there, you can go anytime - no need to wait for an organized meet or for someone to set up a training session.  You can draw your own course on the map, as easy or as hard as you like, and you'll know if you've made it to the right place.  If you're a beginner you can use a permanent course to learn basic skills and get a feel for the sport.  As an advanced orienteer you can use the course to practice advanced techniques or get in some terrain intervals.