This Quick Start guide tells you how to set up your iPhone and use its key features. Once you're up and calling, you can learn even more about iPhone at www. apple. com/iphone. Ready, set up, go. Download iTunes. Go to www. itunes. com/download and download the latest version of iTunes to install on your Mac or PC. Connect to your computer. Connect your iPhone to the USB port on your computer. When iPhone is connected, iTunes opens and guides you through setup. Select the contacts, calendars, music, videos, and photos you'd like to sync, then click Apply in the lower-right corner. If you're new to iTunes or syncing, you can watch a quick tutorial at www. apple. com/ itunes/tutorials. Button basics. To turn iPhone on, firmly press the On/Off button. To turn off or restart iPhone, hold down the On/Off button for a few seconds, then slide the slider to confirm. To put iPhone in sleep mode, press the On/Off button once. This turns off the screen but still allows iPhone to receive calls. To silence an incoming call, press once. To send a call directly to voicemail, press twice. Go Home. When using an app, press the Home button to close it and return to its Home screen. To go quickly to the main Home screen, press the Home button from any other Home screen. While in sleep mode, double-click the Home button to bring up iPod controls. Create folders. Organize apps. Touch and hold any icon until it starts to jiggle. Then drag one icon onto another to create a folder. Folders are automatically named by category, or you can rename them. You can customize your Home screen by dragging icons and folders to different positions and different screens. When you're finished, just press the Home button. Multitasking. While on a call, you can access your email, calendar, or other apps, and even surf the web when you're connected via Wi-Fi or 3G. To quickly switch between apps, double-click the Home button to reveal recently used apps...