If you haven't got a GPS, a petrol station can seem the obvious place to ask for directions. But for more reliable information, try a pizza place.
Photo by Calsidyrose.
Reddit user ohthatdave suggests that pizza places that deliver are the ideal places to go to get directions:
The drivers know the area better than anyone and they usually have a big honking map on the wall to show where they will and won't deliver too, so you can avoid driving through the sketchy parts of towns you don't know.
Don't forget to pay attention to ubiquitous cues to find your way around. But again: pizza. Sounds like a win-win.