include FBGrab.js
Once you have an authenticated user logged into your site you can start querying user data from Facebook's Graph API.
FBGrab.userInfo(callback) //get the user object
FBGrab.userAlbums(callback) //get the user's photo albums
The callback is a function object that takes 1 argument, the data response of the query. The formats for the JSON objects you receive can be found at http://developers.facebook.com/docs/reference/api/
Just have a look inside FBGrab.js to look at types of data you can grab from the Graph API.
1. Implement the ability to query connections between all types of objects. http://developers.facebook.com/docs/reference/javascript/http://developers.facebook.com/docs/reference/api/