Cool finding by John Weatherford from a few days ago:
Apple has apparently, via some sort of collaboration with a university professor, published last week — during WWDC — a really solid-looking learn-to-code curriculum for Swift that is kind of on iTunes U but that is really on GitHub.
The GitHub page is available here. Between this and dropping the requirement for a paid developer membership to test apps on a device, it looks like Apple really wants as many people as possible to start using Swift.