With Sierra, Apple brings never-before-seen features to macOS--like Siri voice control, file sharing across all your iOS devices, picture-in-picture mode for iTunes and Safari, and AI photo search. Once again, David Pogue brings his humor and expertise to the #1 bestselling Mac book.

Whether you're a developer or a home-user, this guide offers a wealth of detail on Apple's OS X 10.12 operating system, this new edition covers everything Sierra has to offer.

• Perfect for newcomers. Get crystal-clear, jargon-free introduction to the Dock, the macOS folder structure, Safari, Mail, and iCloud.

• Go in-depth. Learn how to use key new features such as Optimized Storage, the Universal Clipboard, Siri for Mac, and iCloud Drive Sync.

• Get the full story. David Pogue doesn't stop at telling you how to use macOS features. He wants you to know why to use them--and how to avoid common pitfalls.