The zoom functionality has the most flexibility in the Maps skill. In some other skills, you can pinch to zoom. In Maps, from the clockface, swipe from right to left, then flick down the skills. Scroll to Maps and swipe from right to left. A map of your area will come up. Press the minus symbol (-) on the top left of the screen until you have zoomed out far enough for you to see your country or city. Then press and drag on the map to get to what you want to see.