Good road maps have Latitude and longitude numbers printed in the margins. It's very easy to take a ruler and plot your position on a good commercially made paper map using your position obtained from the GPS unit. Most free maps available at rest stops or tourist information kiosks also have Latitude and longitude numbers as well. I use the cheapest unit available so if it gets stolen, lost, or destroyed I don’t feel as bad as I would if I had spent hundreds of dollars on an expensive unit. Even the cheapest GPS units have some graphic capabilities and you can see your position approaching the next waypoint "target". A cheap compass will let you know which direction to go for the next programmed waypoint.