At the registration in Kiruna (or Nikkaloukta) you will recieve a map and your trekking pass.
The map is in scale 1:75000. The trail you will follow is marked on the map. There is also information about the different checkpoints and the service provided along the trail.
Your trekking pass is your personal id during the trek. Make sure that you get your pass stamped at the start and finish and at each checkpoint along the trail.
In the trekking pass there is a lot of useful information about the trail and the trek