Generating a Certificate Signing Request
The first step to obtaining an SSL certificate for Facebook is to generate a Certificate Signing Request (CSR). This is provided to The SSL Store in order for them to generate an SSL certificate unique to your site. The steps below are for Plesk, but similar steps are required for any server administration panel.
For more specific information on how to generate a CSR for your server type, see the following resources depending on the SSL certificate you're purchasing: