To use the Facebook tools, like the Facebook registration tool, you need to create a Facebook App. When you make a Facebook App, that app will have an App ID and an App Secret. With the App ID, you can send several requests to Facebook for data. The Facebook App Secret will be used to decode the encrypted messages from Facebook, so that sensitive information remains protected.
How to: Facebook App ID + App Secret
To complete the following steps you will need to have access to a Facebook account. If you don't have a Facebook account, you can create one here: https://www.facebook.com/
Step 1: Go to http://developers.facebook.com and login with your Facebook account. (Go to Step 3 if you already have a Facebook developer account.)
Step 2: If you don't already have a Facebook Developer account, click on the "Apps" button in the top title bar of the web page. Follow the steps in the wizard to register as a Facebook developer.
Step 3: Once you're registered as a Facebook developer, click on the "Apps" button in the top title bar of the web page. Click on the "Create New App" button in the drop down menu to create a new Facebook app.
Step 4: Enter a "Display Name" and a "Contact Email". When completed, click on "Create App ID"
Step 5: You will be redirected to a "Product Setup" page. In the left vertical menu, click on "Settings - Basic"
Step 6: Your App ID and App Secret are available in this page. Click on the "Show" button to reveal the App Secret.
Step 8: Enter the Facebook App ID and App Secret on the Advanced Settings page of your app in AppMachine.