Best resource to learn ios swift from Apple

With the release of xcode 6 and ios 8, swift is officially available for developers to create ios application. The following are some best resource from Apple to learn swift for ios programming:

Books:

• The Swift Programming Language (also available in ibook)
• Using Swift with Cocoa and Objective-C (also available in ibook)
• Swift Standard Library Reference

Video

• Introduction to Swift
• Intermediate Swift
• Advanced Swift
• Swift Playgrounds
• Integrating Swift with Objective-C
• Swift Interoperability In Depth
• Introduction to LLDB and the Swift REPL
• Advanced Swift Debugging in LLDB