If your newer to the hobby make a list of everyone you know - Family, Friends, Neighbors, Co-Workers, etc.
If their house is more than 75 years old or so (Silver coin era) - ask if you can hunt their yard.
Dig neat plugs, take all your trash and pick up any trash that was left by other people.
If you leave a yard cleaner then when you got there - there's a good chance you'll be welcomed back in the future.
You could also find some good places to hunt by doing some research at your local Library, Historical Society, etc.
Good Luck !