In this tutorial I will tell you about fetching user information from Facebook in your application.
First of all you need to integrate Facebook SDK to your project .
For integrating Facebook to your project click on the link . Facebook provides simple iOS SDK integration .
After integrating Facebook to your project :
1) Create a UIButton for login with facebook
2) Login Facebook on button's action and add Facebook details method to get user details
By Facebook details method :-
You can get
1) Social id
2) Full name of user
3) Email of user
4) Profile picture
For uploading image file to server , please visit my blog on image uploading using multipart