You can call Garmin they are very helpful or there are tons of Utube videosI believe you can go to Garmin and download the owners manual to learn more about all the capabilities.
Personally, I am trying to figure out how to force the system to give all readouts in yards. Anything past 800-900 yards and it switches to fraction miles. I want to use it to set up some long range shots past what my laser range finder will reach.