To sign in with your Facebook account, you must link your Facebook account to your JD CENTRAL account which you can do as per the following:
1. Click the "Sign In" button at the top navigation menu.
2. Click the "Facebook" icon and sign in to your Facebook account.
3. Click "Continue" on the Facebook permission screen.
4. If you already have a JD CENTRAL account, you can simply enter your username and password to link your Facebook account to your JD CENTRAL account. However, if you are a new user, select "New user, register account" tab, and complete your registration to link your JD CENTRAL account to your Facebook account.