This book concentrates on argumentation as it emerges in ordinary discourse, whether the discourse is institutionalized or strictly informal. Crucial concepts from the theory of argumentation are systematically discussed and explained with the help of examples from real-life discourse and texts. The basic principles are explained that are instrumental in the analysis and evaluation of argumentative discourse. Methodical instruments are offered for identifying differences of opinion, analyzing and evaluating argumentation and presenting arguments in oral and written discourse. Attention is also paid to the way in which arguers attempt to be not just reasonable, but effective as well, by maneuvering strategically. In addition, the book provides a great variety of exercises and assignments to improve the student's skill in presenting argumentation.