The course is designed to acquire professional skills and knowledge useful when exploring datasets. In particular, the student will be able to visualize datasets choosing the most appropriate technique for the data at hand, and will be able to get insights from the data supported by the visualizations, using basic statistical tools. The student will also learn to avoid the common pitfalls in visualization that can mislead the analysis. Visualization and data handling are done using the R programming language, following the best practices of reproducible research.