This document provides an introduction and guide to the issues and intellectual geography of the social economy. It discusses the varying terminology used to describe economic activities that do not fit into private or public sectors, including common terms like "third sector" and country-specific terms. It outlines some key characteristics of the social economy, including its tradition and renewal, North-South perspectives, and major sites like savings and credit co-operatives and mutual aid organizations. The guide concludes by identifying several main issues for analysis in the book, such as individual and collective strategies, relationships with the informal sector, and partnerships between states and civil society.