if it was london then it would be easy
i was told to remember where all the tube stations were and after that it was a walk in the park

the other thing is to find a few bus routes that go through the most popular parts of the world and look at the bus stop signage
if they are anything like london signs they will have a street name on them and a direction of travel for the bus (or even a proper bus map of the areas it covers)
don't know about it being the same out in the wildnerness whereever you may be though, but thats the best place to start