Book excerpt: There has been an exponential growth of personal GPS device sales over the last few years and Garmin is leading the way. In particular,the Garmin nüvi navigators have revolutionized what we expect from a GPS navigation device, or from any device for that matter. In this handy new Pocket Guide, mobile device expert Jason O'Grady reveals the secrets to using these leading personal GPS devices, including the nuvi 350 which provides automatic routing, turn-by-turn voice directions, and touchscreen control-- making it easy to find your way anywhere. In addition the built-in "Travel Kit" offers an MP3 player, an audio book player from Audible.com, a jpeg-format picture viewer, a world travel clock with time zones, a currency converter, a measurement converter, and a calculator. With this essential companion you'll be a Garmin GPS master in no time!