This document discusses community structure, dynamics, and development. It describes the internal structure of communities and how they are made up of various populations within a space. Community development is defined as a process where community members work together to solve common problems. The document also outlines five key functions of communities: production/distribution/consumption to provide livelihoods; socialization to instill norms/values; social control to enforce values; social participation for companionship; and mutual support to help each other.