The course will be articulated in two distinct phases, although interconnected each other. The first part will be dedicated to the examination of the main theories, from the classic authors until the most recent sociological productions.In the second part will be given helpful elements to understanding the relationships between the method and the skill in the scientific research. Some sociologically relevant topics will be focused in reference to the empirical facts. The course will have essentially frontal lessons and, where it be possible, some elaboration in workshop.