After using this unit for the last month I've found it to be very easy to use. I've been using it for highway driving, but since there are no built-in maps this unit is really geared for boaters. However, it is still useful for highway navigation, especially if you enter waypoints in advance. I recently used it for a 600 mile trip by entering my own waypoints and it worked great. This is my first GPS unit and I've had a great time playing around with it, and I think it is a good unit for "first time" GPS users to learn about GPS. I plan to upgrade in the next year or so to a unit that includes maps (possibly the Garmin GPS III plus).