Turn-by-turn navigation is a type of GPS (Global Positioning System) feature that helps you get from one place to another. It works by giving you directions on your phone, GPS device, or car dashboard. When you enter a destination into the GPS, it will create a route (or path) and give you a "turn-by-turn" list of instructions. For example, it might tell you to turn left at the next intersection and then turn right at the following street. By following these instructions, you can get to your destination!