the map is pretty damn confusing, but thats the point of maps. The navigation system is basically based off actually park maps, where following trails will lead you to a waypoint/landmark, and then you use that landmark to find your way around.
it's also definitely helpful knowing what the things labelled on the map are (the easiest being the fire tower). but once you learn the lay out, and understand exactly where and what everything is (the question marks are picnic tables. I don't know if that was obvious), it's pretty much fun. I just played the game for the second time, and I beat it within about—30 minutes