Chapter 1, Introducing Swift, takes you through the process of installing Swift and running your first Swift program to expose its power right away.

Chapter 2, Building Blocks – Variables, Collections, and Flow Control, introduces you to the various built-in mechanisms Swift has to represent complex information in expressive and accessible ways with the help of a real-world example.

Chapter 3, One Piece at a Time – Types, Scopes, and Projects, introduces the tools necessary to more closely model the real world with code. It will teach you to define your own custom types using structures, classes, and enumerations. It also explores the concept of scope and access control.

Chapter 4, To Be or Not to Be – Optionals, focuses on a special and critical type in Swift called optionals. It includes a detailed explanation of how optionals work and how they can be used to turn a seemingly complex topic into a very intuitive concept.

Chapter 5, A Modern Paradigm – Closures and Functional Programming, introduces you to a new way of thinking about code called functional programming. We learn how Swift supports this technique and how we can apply it to our programs to make them even more understandable and expressive code.

Chapter 6, Make Swift Work for You – Protocols and Generics, describes what generic protocols are and how they can provide power and safety at the same time.

Chapter 7, Everything is Connected – Memory Management, discusses how a computer stores information and how we can use that knowledge in combination with some new tools in Swift, to ensure that our code remains responsive and minimizes its effect on battery life. In this chapter, we dive deeper into the inner workings of Swift.

Chapter 8, Writing Code the Swift Way – Design Patterns and Techniques, introduces you to the art of programming by taking you through a number of specific design patterns that help reduce the complexity of code.

Chapter 9, Harnessing the Past – Understanding and Translating Objective-C, develops a basic understanding of Objective-C with a focus on how it compares to Swift. This allows you to make use of the vast resources that exist in Objective-C to help with your Swift development.

Chapter 10, A Whole New World – Developing an App, explains the process of creating a real-world iOS application with the help of an example.

Chapter 11, What's Next? Resources, Advice, and Next Steps, discusses how to move forward to become the best app developer you possibly can. It will also provide you with a list of resources you can use to continue your Swift and app development learning process.