iOS > iCloud
http://www.raywenderlich.com/12837/icloud-and-uidocument-beyond-the-basics-part-1 http://www.raywenderlich.com/12837/icloud-and-uidocument-beyond-the-basics-part-2 http://www.raywenderlich.com/12837/icloud-and-uidocument-beyond-the-basics-part-3 http://www.raywenderlich.com/12837/icloud-and-uidocument-beyond-the-basics-part-4
iOS > twitter
twitter sample code: http://mobileorchard.com/ios-tutorial-twitter-integration-in-ios5/ http://www.raywenderlich.com/5519/beginning-twitter-in-ios-5