This document discusses social network analysis and its key concepts. It defines different types of networks like ego-centric and socio-centric networks. It also discusses network concepts such as density, cliques, brokers, and peripherals. The document outlines advantages of social network analysis in identifying important actors and understanding communication patterns. It also notes limitations like relying on snapshots and survey responses. Finally, it provides an example of how social network analysis was used to study business connectivity in Bristol.