This document provides an introduction to the key concepts of social structure, stratification, and social processes that will be discussed in the chapter. It defines social structure as the patterns and regularities in social behavior and relationships that give society its form. Social stratification refers to unequal distribution of resources and hierarchical groupings within society. The chapter will examine how social structure and stratification shape three social processes - cooperation, competition, and conflict. It discusses different theoretical perspectives on these concepts, such as functionalism which views them as necessary for social stability, and conflict theory which emphasizes inequality and power dynamics. The document sets up how the chapter will analyze how individuals' positions within social hierarchies influence their ability to engage or resist these social processes.