Now that you have a basic understanding of how your watch works, go ahead and start your first workout. If your watch doesn’t have a built-in heart rate monitor, be sure to put on a heart rate strap (if you have one) and pair it with the watch. Establish a satellite link, and press Start.
"If you need to take walking breaks, do it. There is absolutely no shame in doing so."
Just enjoy yourself as you workout. Don’t worry about interfacing with the watch at all. Perhaps glance at it as you go, keeping track of elapsed time and distance. Speaking of which, you don't need to plan the length of your route in advance. Want to cover four kilometers? Go until you hit two kilometers on your watch, turn around and come home. If you need to take walking breaks, do it. There is absolutely no shame in doing so. Don't bother pausing the watch if you slow down. Enjoy the fresh air instead.
There is a world of stuff you can get into in the near future, such as using the watch for zone-based heart rate training, but for now, just get used to wearing it. At the end press Stop, and be sure to Save the workout before you turn it off.