This document discusses social groups and their structure and importance. It begins by defining what a social group is and explaining that individuals are social beings that live in groups. It then describes the key elements of group structure, including status, norms, roles, communication, and interaction patterns. The document also covers different types of groups like primary and secondary groups, in-groups and out-groups. It explains the importance of social groups for providing motivation, task motivation, satisfaction, and social support to individuals.