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.