I am currently working on a detailed course that covers the Facebook Graph API. The commercial professional version will be available at www.xperato.com. The free community version (for personal usage) will be availble at www.abelski.com.
Many of the Facebook Graph queries can be completed using an authentication token. In order to get an authentication we first need to get an authentication code.
The following video clip explains how we can get an authentication code.
The following video clip explains how we can get an authentication token using the authentication code we hold.
The detailed slides that explain this topic were already completed and you can download them at the following URL address http://www.abelski.com/courses/fbgraph/userauthorization.pdf.