In the following sections, we're going to learn more about Facebook Open-Graph API and configure it so we can start crafting some code to build our awesome application.
Facebook Open-Graph API is a service for getting, editing, and adding common Facebook resources. Some of its functionalities that you can use in your own application are: login; request user-specific resource permissions such as manage events, post to friends walls, and the list goes on. It has a bunch of functionalities that you can use and integrate your app with. One of the main functionalities used by third-party applications is, of course, the login integration. You can use it just as a login platform, for instance, if you don't want or don't have time to build one.
Tip
The API documentation is provided at https://developers.facebook.com/ and it's recommended that you check this out.
If you want to test some requests to their API, without having to start...