This document discusses networks and their importance. It defines a network as a collection of people connected through relationships. Networks come in many forms, such as those within organizations, cultivated by a single organization, coalitions, alliances, and networks of networks. Networks are powerful due to their ability to self-organize and experience rapid growth. Networks are good for weaving communities, accessing new perspectives, sharing and building knowledge, mobilizing people, and coordinating resources and action. The document asks questions about how foundations can catalyze, foster, support, and become networked by leading with a network mindset and using social network mapping. It provides information on learning more about network funding.