Question

what do you use a compass for

Answer 1

We use a compass for knowing directions .
The magnetic needle inside of the compass uses the earth's magnetic field to point north .

Answer 2

Hold the compass horizontally in front of you with the direction of travel Arrow pointing away from you. Use this Arrow to guide you to your destination.
Turn your body until the north and of the magnetic needle is aligned who is the orienting needle, and you be properly oriented toward the destination on the map.