The document outlines 13 steps to start developing Facebook apps using Heroku: 1. Create Heroku and Facebook app accounts 2. Create a Heroku app linked to the Facebook app 3. Add cloud services and download the Heroku Toolbelt to fetch the app source code from Heroku 4. Configure a local development Facebook app, set environment variables, and start a local server to test changes before committing code to Heroku.