Editing, deleting sites is an option in this screen.
Exporting will export to Excel only the sites view shown here. As more pages, get added, each page would need to be exported individually.
When you Add a Site, a new box will open up on your screen. *Adding a site is easy using the map and with Location Services enabled. When you pan around on map and left click, it will drop a pin and automate the lat/long, address, county. Clicking on the circular marker provided by Google Maps will also give you an address. Dragging google man over to the street, will show you street views. These functions of Google Maps exist in this window.
*If you do not see a pin on the map at your current location, then your Location Services is not turned on. Turn on Location Services by changing settings in Preferences or your URL address bar (where you type the website) at the top of your screen.