What do you need help with? That file is a mess, find last years booklet which summarizes things up a bit better. Should be available on the DFW website.
I have the 3 but sell numerous 5’s at my store. I use the GPS on hike for day hunts as it’s creates a route and will put it in ultra trac mode for over nighters as it extendeds the battery life to 50’ish hours.