According to the manual that comes with my basic hiker GPS, you must be moving at least 2 mph for the navigation pages to work
The GPS will display the track it has calculated and show the position of North relative to your calculated track.
If you point the top of my unit in the direction you are proceeding, then North will be shown by an arrow relative to the top of the unit.
Overindulgence at a pub may interfere with navigational preformance
