placing a geographic location on Google Earth
It sometimes takes some time. I have been more successful putting a business on Google Maps, https://www.google.com/maps/, and having that information carried over to Google Earth through the Google system data management. In other words, important markers you put on Google maps find their way to Google Earth.
If you are just wanting to find some personal places as you go from computer device to another, then you will need to set up a google account and create a saved locations in "My Locations" in Google Earth, or "Your Locations" in Google Maps.
Let me know if you have more questions.