* [Swift Pocket Reference](http://www.oreilly.com/programming/free/swift-pocket-reference.csp) (email address *requested*, not required)
* [Test-driven iOS Development with Swift](https://www.packtpub.com/packt/free-ebook/TDD-Swift) - Dr. Dominik Hauser, Packt. (email address *requested*, not required)
* [The Swift Programming Language](https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/index.html) (HTML) [(iBook)](https://itunes.apple.com/us/book/swift-programming-language/id881256329?mt=11)
* [Using Swift with Cocoa and Objective-C](https://developer.apple.com/library/content//documentation/Swift/Conceptual/BuildingCocoaApps/index.html) (HTML) [(iBook)](https://itunes.apple.com/us/book/using-swift-cocoa-objective/id888894773?mt=11)
* [Programming Windows 8 Apps with HTML, CSS, and JavaScript (v1)](http://blogs.msdn.com/b/microsoft_press/archive/2012/10/29/free-ebook-programming-windows-8-apps-with-html-css-and-javascript.aspx)
* [Programming Windows 8 Apps with HTML, CSS, and JavaScript (v2, incomplete)](http://blogs.msdn.com/b/microsoft_press/archive/2013/10/29/free-ebook-programming-windows-store-apps-with-html-css-and-javascript-second-edition-second-preview.aspx)
* [Programming Windows Store Apps with HTML, CSS, and JavaScript, Second Edition](https://web.archive.org/web/20150624142410/http://download.microsoft.com/download/6/6/5/665AF7A6-2184-45DC-B9DA-C89185B01937/Microsoft_Press_eBook_Programming_Windows_8_Apps_HTML_CSS_JavaScript_2E_PDF.pdf) - Kraig Brockschmidt (PDF)