The best way to communicate information about phenomena and human behaviour is by visual means (image or video). The information about various locations are better represented by a map. This is because the reader cannot easily follow data on tables and text. On the contrary, our vision allows us to quickly identify information and patterns on maps. Creating a map requires some skills, but it remains an art. The art of map making and cartography. This book attempts to demonstrate that anyone who has access to a computer with an internet connection can create a thematic map in one hour and for free. You need to know the basics of computers and to invest some extra time in downloading and installing the software as well as in preparing your data.