Do you want to use GRASS GIS, but never understood concepts like location, mapset or computational region? Or perhaps you used GRASS GIS already but you wonder what are the latest tips and tricks? In this workshop, we will explain and practice these concepts and answer questions more advanced users may have. We will help you decide when to use graphical user interface and when to use the power of the command line. We will go through simple, yet useful examples of vector, raster, and image processing functionality. Building on these examples, we will employ Python scripting to parallelize our workflows to get you ready for your next big data project. We aim this workshop at absolute beginners without prior knowledge of GRASS GIS, but we hope it can be useful to current users looking for deeper understanding of basic concepts or the curious ones who want to try the latest additions to GRASS GIS.