This document provides an organizing manual for Organizing for Action (OFA) volunteers. It covers OFA's mission and culture, building strategic issue campaigns, developing OFA chapters and teams, and methods for building capacity such as using personal stories, 1:1 meetings, trainings, and data. The manual is intended to provide context on how OFA develops strategy and how volunteers can adapt strategies locally. It shares best practices in issue organizing and building grassroots advocacy campaigns that are people-centered and metrics-driven. The overall goal is to engage communities on issues that matter through their personal stories, build relationships between volunteers, and hold elected officials accountable to constituents.