Swift
Getting started in Swift
Swift was introduced WWDC 2014, there are beginner, intermediate, advanced WWDC videos -- check out the first one
Playgrounds were introduced at the same time, a playground lets you code Swift "hit the ground running" style. Check out the playground video.
Download Xcode 7 beta then you can use Swift 2.0
Get the Apple Swift book. It starts off with a playground taking you through quickly through what Swift has to offer. Get the swift 2 version.
https://developer.apple.com/swift/resources/ <-- check out the links (the book and Xcode beta are in there. But also links into Apple documentation re: getting started)
https://developer.apple.com/swift/blog/ <-- read from the bottom up
https://itunes.apple.com/gb/course/developing-ios-8-apps-swift/id961180099 <-- 1.2 million downloads and counting apparently
- swift-lang on IRC (FreeNode server)
https://gist.github.com/erica/0c445044e1bf97778263 <-- this is the Page linked in the IRC Channel topic -- more links (including SwiftStub) here