iOS 9 introduces a wealth of great new functionality for developers, and I want to teach you how to get started with iOS 9 features in your own apps and games.
Note: If you have yet to learn Swift, I wrote a huge collection of free Swift tutorials that teach you how to make iOS apps – you should start there first before progressing onto these tutorials.
Paul Hudson is the creator of Hacking with Swift, the most comprehensive series of Swift books in the world. He's also the editor of Swift Developer News, the maintainer of the Swift Knowledge Base, and Mario Kart world champion. OK, so that last part isn't true. If you're curious you can learn more here.