How can I drop a pin on the apple map and get the location?

How can I drop a pin on the apple map and get the location?

In my application i want to show for the user map in current location and
i want the user can move (change) the pin for new location or drop a new
pin on the map and get the location.
somebody know good toturial for this ? i develop Cocoa developer but never
work with MapKit.
Thanks for help.