From the Book - 6th edition.
Part 1: Getting to Know Your iPhone
Exploring the Home Screen
Part 2: BEginning to Use Your iPhone
Making and Receiving Calls
Communicating with FaceTime and Messages
Making Your iPhone More Accessible
Part 3: Exploring the Internet
Working with Email in Mail
Expanding Your iPhone Horizons with Apps
Socializing with Facebook and Twitter
Shopping the iTunes Store
Enjoying Music and Podcasts
Taking and Sharing Photos
Creating and Watching Videos
Part 5: Living with your iPhone
Getting in Step with Health
Keeping On Schedule with Calendar and Clock
Working with Reminders and Notifications
Getting the News You Need
Troubleshooting and Maintaining Your iPhone