Editing Directional Scanner and Overview (section)

==== Location Scanning ==== 
A bit trickier and will require a bit of practice.  Try the following:
# Load an expanded probe launcher and some combat probes.  These must be combat probes, not the core scanner probes.  You will also need an expanded probe launcher since the combat probes are ten times larger than the core scanner probes.
# If you don't have a selection in your D-Scan dropdown called Drones, then create one as mentioned above in the defensive scanning section.  Clear everything and choose the type of drones you want to look for.  This can be combat drones or just select all of them.  Load Drones from the D-Scan dropdown.
# Go to a system where new players start.  It's not uncommon for them to lose drones as they warp away and forget to recall them.  Alternatively, grab a drone yourself and take it to someplace in a high security system and leave it behind.  Bookmark the location (just in case) so that you can pick it up if you need to.  Now warp somewhere in the system and go looking for lost drones or the one that you dropped off.
# Open the map, choose the distance of 14.3 AU and 360 degrees and hit scan.  You should see the drone in your sphere of detection.  
# Align with the camera and decrease to 180 degrees and scan.  If you are not detecting the drone, move the hemisphere of detection and re-scan until you do.
# Decrease to 90 degrees, scan and if needed repeat the process to detect the drone.  Keep repeating the process until you are at 30 degrees or less.
# Now stop aligning with the camera and double click on the map.  You should see a cone extending from your ship.
# Decrease the distance from 14.3 to 10 and scan again.  If you still see the drone, decrease the distance to 5.  Once you stop seeing the drone when you scan, you've got an approximate distance.  Now use the up and down buttons next to the distance number to fine tune the value where the drone appears/disappears.
# In your probe launcher window, be sure you have Drones and Charges selected.
# Launch your combat probes.
# Center the combat probes over the base of the cone to cover the entire base.
# Scan with your combat probes and you should get a hit.  If you need to, reposition your combat probes and scan again until you get a good location.
# Recall your combat probes.  The less time they are out, the less chance that someone else will see them.
# Warp to the location and retrieve the drone.

As with everything in EVE (and in real life) practice until you feel comfortable, then practice some more.