This document provides an overview of networks and how to create and sustain successful networks. It discusses attributes of networks, tools for network management, and how networks relate to leadership, innovation, and social media. The document examines different types of networks that exist in organizations, communities, ideas, the human body, and the internet. It also discusses examining network structure and managing a network's context. The key aspects of "net work" are creating, examining, and shaping a network's properties as well as stewarding the connections within the network.