###Lesson 1: Variables
In this lesson, you’ll learn about one of the most basic building blocks of nearly every programming language — variables. Variables give developers the ability to store information that can be used to control the behavior of an application. By the end of this lesson, you'll be able to create and store values using variables.
###Lesson 2: Strings
In this lesson, you’ll learn how to represent a sequence of characters, or in other words, a string! For iOS apps, you'll use strings for labels, buttons, and any text in a user interface, but you'll also need them for behind-the-scenes processing. By the end of this lesson, you'll be able to create and manipulate strings using their powerful built-in features.
###Lesson 3: If Statements
In this lesson, you’ll learn how to control when and how Swift code is executed by using if statements. You'll also learn about the counterpart to if statements called "else" statements. By the end of this lesson, you'll be able to specify conditions for when Swift code should be executed based on logic that you define.
###Lesson 4: Functions
In this lesson, you’ll learn about functions — the construct which gives developers the ability to organize and reuse code. Understanding functions is a crucial step to becoming an iOS developer, and once you finish this lesson, you'll be able to create and use them in Swift.