Change begins at home.  Organizing means taking collective action.
The "why" of collective action.
First, a few definitions. “Act collectively” means that people agree to work together to achieve a goal. Key words here are "people agree". There is no magic formula for what an “agreement to work together" looks like. Agreeing to work together could be a by-laws, a constitution, a manifesto, a motto (“Black Lives Matter”), an event, or meeting.  

“Organizing" is the process of getting people to agree to work together. An “organizer" is someone who's primary mission is helping people find ways to act together. Since acting together is a voluntary activity and no one is required to participate. Therefore “working by consensus” is the best way to bring people together. “Working by consensus” means that everyone has a “say” in the process and the agreement reflects the needs and interests of all the participants...not just the loudest leaders. “Consensus” takes time, patience and practice. Here's one of the best reasons to use an organizer to manage the process. 

Collective Action is based on the simple principle that there are two sources of power in our communities: money and people. Since low income communities lack money, their strength is in the combined efforts of many people

When asked to define herself or himself....probably the last thing a tenant will say is: "I'm a tenant. Tenants will tell you their religion, race or ancestry, age, height (not weight), and family relationships (wife, parent, grandie) before they'll say "oh, and I rent." Since renting is not a primary personal identifier, organizers tend to rely on locality (where you live) and issues (what's happening to your home) to be a basis for collective action. 

An Organizing Curriculum

likes people
non judgmental
dispute resolution

Community structural analysis
Strategy & Tactics
Organizational dynamics
Theories of Change
Subject area expertise