Compass
You do not need a compass to run a white or yellow course!
It's important to develop good map reading skills before learning how to use a compass.
Once you advance to orange level courses and higher (where you will orienteer off trails), a compass will be useful in determining direction.
Focus on reading the map accurately. Orienteer alongside obvious, linear features (aka handrails) like trails and roads.
Baseplate compass
There are two main types of compasses used in orienteering:
Baseplate compass
Thumb compass
Consult someone knowledgeable about compasses before selecting which type to purchase.
Thumb compass