The word "navigate" means to find out where you're going on a boat or ship. When people used to travel on wooden sailing ships, people navigated using maps, the position of the stars, and a compass.
These days, people don't talk much about navigating the ocean. Instead, people use "navigate" in metaphors like in the example above.
When a person rides in a car and tells the driver where to go by looking at a map or GPS, they're also "navigating" the car.