Type in your address and press Search.
Example: 850 Rodeo Dr., 90210
A pin will appear. If it is not exactly where you wish, drag it to a new location. The lattitude and longitude will update with each move.
If the address doesn't generate a pin, try some different things, like leaving off the city or zip code.
Failing that
Click here then, drag, scroll, zoom in or out, as needed.
When the pin is located where you desire, click on the "Go to Form" link in the balloon.
As always all info is optional except for Handle, Latitude & Longitude.