Click Additions>Add Marker-Simple, enter book name, location, and a short description if you like. Choose marker color. Choose one color marker for all locations from a single book or series. For example, I used Sunflower for the Little House series. Once all colors of markers have been used, go ahead and start repeating colors, just try to keep them separate on the map, so don't use the Sunflower markers for other books set in the middle of the United States. Click "Submit"