If your compass lacks an adjustable declination, you’ll need to do it manually by adding or subtracting the declination each time you take a bearing. Orienting means finding the cardinal directions.

Scale: All maps will list their scales in the margin or legend. A scale of 1:250,000 (be it inches, feet, or meters) means that 1 unit on the map is the equivalent of 250,000 units in the real world. ...

And knowing the compass directions of your property can help greatly. And the great thing is -- thankfully -- you don't have to have a good since of direction to do it.