0. Introduction
Welcome
What you should know

1. Core Syntax
The structure of Swift
Writing Swift in playgrounds
Declaring variables
Creating constants
Printing values and working with string interpolation
Converting values
Writing if statements
Using the switch statement
Creating loops in Swift
Defining functions

2. Complex Types
Creating and using arrays
Using dictionaries
Understanding tuples
Creating optional variables
Defining and using enumerations
Writing closures

3. Creating Classes
Defining and instantiating classes
Adding initializers to a class
Using inheritance
Creating computed properties
Using type properties and methods
Defining lazy properties
Adding property observers
Understanding access modifiers in Swift

4. Taking It Further
Working with structures
Using basic operators
Comparison, equality, and identity
Advanced operators
Importing frameworks and using Objective-C classes

5. Advanced Language Features
Type checking and downcasting
Using Any and AnyObject references
Supporting protocols
Adding functionality with extensions
Using generics in Swift

6. Conclusion
Wrapping up