This new textbook offers an important new guide to legal theory in its contemporary context. It reflects recent jurisprudential debates on what the theory of law should look like in a legal landscape where media and communication play an increasingly central role. Firstly, it offers a guide to the fundamental principles and basic concepts of the theory of law. In so doing, it lays the foundations of the legal theory; the formation of legal systems; and the application of laws. In the second part, these basic theoretical principles are explored through the prism of the contemporary context, with particular emphasis on the impact of communication.