This page collects the material for a 4-day course on the dissimilarity representation using the Matlab toolboxes DisTools and PRTools. (There is also a very short 2-hour set of examples). It is assumed that students are familiar with the concepts of pattern recognition and/or machine learning. The exercises described here are intended as an illustration of oral lectures and offer hand-on experiments by which a better understanding is gained. Moreover, the may serve as a start for further research and building applications.