I think it was described in the books as concentrating on that place. When Harry and Dobby Apparated from Malfoy Manor to Shell Cottage, neither of them had been to Shell Cottage. They were able to go there based solely on the name of the place ("Shell Cottage") an identity based on its inhabitants ("Bill and Fleur's") and a general location ("outside Tinworth"). It worked because Harry was focusing on Shell Cottage with his whole mind. He didn't even notice the giant knife sticking out of Dobby's chest until they actually arrived at the cottage. So you should be able to Apparate somewhere solely based on a name and an idea of where it is.
Originally posted by OliveOil_Med:
But now I'm confused! What exactly goes into knowing your location for Apparating somewhere? Do you just picture the place in your head? Do you picture the location itself or do you have to be able to spot it on a map and then picture that in your head? Is it more left brain or right brain oriented? Do we even know?