I always like those trailside and mall signs that say 'YOU ARE HERE.' I know I'm 'here.' It's getting 'there' that's the hard part.
Two compass types DO NOT point north. I'll give a turn of my SPARKLITE to whoever names the other two.
A training compass is like many other bits of kit: you get to simple and it falls short. Buy a model with of whistles and bells and you get lost.
A good quality compass in between can suprise lots of folks. My old SILVA Ranger with aluminum bezel plotted many a archaeologic site. I lost track of the people who worriedly double checked my plots with a big fancy Brunton Surveyor's compass @ 8x the cost. that was a lot of post excavation pizza and beer I saved.