I present a new edition of the work corrected and updated. The main novelty is that, on this occasion, I have decided to incorporate some solved cases in a summarized way at the beginning of each block. I have sought to make it easier for students to follow the subject, also remotely, since the solutions in the script will serve them as a guide.I have to say that the book is intended to be used in face-to-face classes. Those that appear as responses to the cases are not exhaustive, of course. I always seek to encourage dialogue, to encourage participation to enrich learning. Public speaking is a skill (transversal competence in the curriculum) that can only be acquired with practice and, for this, the approach of this work is ideal.This manual is made up of different types of practices: some are short questions, which aim to help the students to detect whether they have assimilated the knowledge in question, or perhaps it is not as clear as they thought. Others consist of reading an article of interest, and then answering to a questionnaire. In this case, the purpose is to make deeper the knowledge of the students about some particularly complex topic, that require a more leisurely reflection due to their difficulty. For students of non-legal degrees, it is especially important, in order toachieve a broader and more versatile vision of law.