Becoming a successful developer is all about hands-on coding experience. The iOS 9 and Xcode 7 Guide teaches you how to build 20 project apps from scratch, and Technobuffalo Deals has it for $19.
The coursework is designed to be accessible for complete beginners, but you make satisfying progress. After finding out how to acquire a developer’s license, you first learn your way around the Xcode environment, before getting to grips with the fundamentals of Objective-C and Swift 2. With this base knowledge in place, the course walks you through the building of your first basic app. This cycle of learning and building continues throughout the Guide, and the lessons teach all the possible objects, actions, and outlets available to you as a developer. The apps range from a YouTube client to a Contacts list, and along the way you learn about UI design, monetization with ads and in-app purchases, and the publishing process. It makes for a comprehensive introduction to app development, and you come out with a nice portfolio.
You can currently save 90% on the price of the iOS 9 and Xcode 7 Guide, with lifetime access to all the content.