How do I mark a special spot with a pin?

1. Center the map on the spot.
2. Open a layer, press "+ add piece...", and choose Pins.
3. Pick Star, Heart, Hexagon, Diamond, Triangle, Compass rose or North arrow.

The pin is dropped on the center of the map view. To move or resize it, open Size & shape: under "Imported & pins" use the - and + buttons to resize, or pan the map and press the center button to move it there.