Book excerpt: iOS 6 has arrived, and eager users everywhere are getting ready to update their devices. If you're concerned about the upgrade process, or simply want to know all your setup options before making the big switch, let the editors at Macworld help you upgrade your iPhone, iPod touch, or iPad to iOS 6 with this step-by-step guide. Want to upgrade to iOS 6? We lay out which devices will run Apple's newest mobile OS, and how to download and install it. Once you've gotten the software on your iPhone, iPod touch, or iPad, we'll walk you through its marquee features: We'll show you how to get started with the new and improved Maps app, ask Siri about sports scores, enable Do Not Disturb, and adjust the new Accessibility settings. And if you're confused about Apple's sync service, iCloud, never fear: Our iOS 6 Upgrade Guide also offers a rundown of the service and each of its features. There's no better resource to learn about iOS 6.