Basics of the software environment and its control. What is a graphical analysis? The principles and limitations. We create simple graphs in Mathematica, R and Gnuplot. We work with large data sets. Smoothes the data, we analyze trends. We use styles for better results. Charts are 3D too. Do we know how to use the basics of statistics? We use macros, scripts and batch commands. We analyze our work, basic graphical analysis. We export results. Interaction with other applications, we put outputs into the thesis. Case studies or what we can take advantage of new knowledge.