Map maker John Tauranac shares his expert insight on mapping New York City's complex underground transit system!

4. Tap Create a Custom Route. From here you have to plot your route by tapping around your map. You can tap intersections and landmarks — like restaurants and shops — and the app will start ...

There are a variety of ways Google Maps can help make your trip easier -- from helping you navigate airports to making restaurant reservations. Check out some of the app's more useful tools for ...