How to Use GPS Vehicle Tracking

I had a GPS Vehicle Tracking device installed in my wife’s car a couple of months ago, and I have not thought to try and use it yet. I have recently got more suspicious about her possibly cheating on me, and as such, I think it is time to try this GPS tracking out. Unfortunately, I don’t really know how I am supposed to use it, so I am trying to look up some information on using vehicle tracking on the internet, so that I will be able to learn what I am doing.

I really hope that my wife is not actually cheating on me, and that I am just being paranoid about this whole matter.