Useful Article Links in Studying Swift

1.) For studying the basic of swift :
     file:///Users/czetsuya/Downloads/404_advanced_swift.pdf-,%20attachment

2.) Useful for studying "Case Classes"
     http://masteringios.com/blog/2014/06/26/hello-swift/2/

3.) “Building Adaptive Apps with UIKit” 
     https://developer.apple.com/videos/wwdc/2014/

4.)  Size Classes With Xcode 6: One Storyboard For All Sizes
      http://www.learnswift.io/blog/2014/6/12/size-classes-with-xcode-6-and-swift