Excel is the most popular and widely used productivity software in all business environments, and it is an irreplaceable companion in ordinary work as in the analysis of large amounts of complex data. Nevertheless, the majority of users knows and uses only a very limited number of features, often in an elementary way. This workbook shows in practice the use of a wide variety of formulas, functions and features (like pivot tables, macros or the Solver add-in) that allow to effectively and professionally work with Excel. The workbook starts with the basics and gets progressively to deal with very complex cases. It is a valuable support for college students, professionals and managers who want to learn the basics or to improve the knowledge of Excel up to an advanced level. In the dedicated web area, all the initial and solved files are available to carry out the exercises and check the solutions. Over 40 exercises are commented, to highlight the basic concepts and clarify the most complex ones. The authors are all lecturers for the course of Computer skills for economics at Università Bocconi in Milan: Massimo Ballerini, Alberto Clerici, Chiara Debernardi, Davide Del Corno, Maurizio De Pra, Gianluca Salviotti and Marco Sampietro.