As you may see often, it is becoming very common that people are using Facebook as a tool to organize events. Social media has made it easy to invite and share events within their social network and communities. (Like EventNook on Facebook here!)
But when you are selling tickets or need to collect details of your attendees for your event, a simple online tool like EventNook (Online Event Registration & Ticketing Platform) helps you to do that as Facebook do not provide those abilities. (To learn more what EventNook can help you for event ticketing, click Features)
To create an event with a link to a Ticketing URL, you must first have a Business Facebook Page/ Facebook Fan Page. You can add EvenNook’s ticketing URL in the Facebook event as shown below.
Here is how Facebook event looks like with Ticketing URL
Here is how the external ticketing page (event ticketing page at EventNook) looks like.

To know more about details on how you create a Facebook event, go to https://www.facebook.com/help/429428587125183