The development of knowledge in the field of Computer Science is particularly beneficial when combined with a deep understanding of the corresponding concepts. The main goal of the book is the methodology of developing the programming background (algorithm) for problem-solving, either in contrast to automated statistical packages (Statgraphics, SPSS) or independently (Pascal, Visual Basic). A direct consequence of this targeting is a better understanding of the corresponding concepts, which is further expanded through the processing of real data from a wide range of applications. Finally, an introduction is made to the Internet and its positive aspects as well as the risks it entails.