How to Use this Tutorial GPS is a complex technology but understanding it can be quite easy if you take it one step at a time. This tutorial is designed to give you a good basic understanding of the principles behind GPS without loading you down with too much technical detail. For those details see the reference links in our GPS Guide.
 
We recommend that you follow the tutorial in the order it's presented, especially the "How GPS works" section. In that section the logic of the explanation develops one step at a time. Since we're trying to discourage you from deviating from a linear path through the tutorial any links you encounter will bring up an extra information window that only leads back to the tutorial. That way you won't get lost.