The structure of this book was very much full of applications of each of the maps and try to delve into the deluge of information that is a result of mapping with coordinates. However, instead of mapping a few variables, you have the ability to create maps that use two variables. This is not meant to be a very complex; however, this primer is to ensure that the basic and practical skills at least make this more suitable. I end with a plethora of skillset that will allow to create maps. Just follow along and you will be fine.