Register a Facebook Developers account

1. Go to http://developers.facebook.com/.
2. Click on the 'Apps' option at the top of the screen.
3. Click the green 'Register as a Developer' button in the top right of the screen.
4. Click the 'verify your account' link.
5. Type in a mobile phone number  in the 'Phone Number:' field.
6. Facebook will text you and give you a confirmation code. Enter the confirmation code in the 'Code:' field.
7. Click the 'Confirm' button.
8. Finish filling out your profile details.

Create a Facebook Developers App

1. Go to http://developers.facebook.com/.
2. Click on the 'Apps' option at the top of the screen.
3. Click the 'Create New App' button.
4. Enter in the name of your app in the 'App Name:' field
5. Check the 'Yes, I would like free web hosting provided by Heroku'.
6. Click the continue button.
7. Fill in the captcha field and click 'Continue'.
8. Click the 'Create' button on the on 'Host your site with Heroku popup window.
9. You are now at your Basic' setting window, with a popup window on top of it. Click the 'Go to App' button on the popup window.
10. Navigate back to your 'Basic' settings window.
11. Copy the 'App ID:' and save if to your records to use or for any WordPress apps.