The goal of this book is to facilitate both teaching of applied econometrics, particularly in undergraduate and Master courses, and learning by students and, more generally, by those concerned with a formal measurement of economic events. The task requires combining statistics, economics and computer science in the right proportions. Statistics is needed for a correct formulation of the problem and interpretation of the results, so the statistical content of this book is rigorous but limited to what is strictly necessary. All theoretical concepts are then illustrated empirically, with examples that use either simulated data or actual data on economic variables. The examples in this text are based on EViews.