Your tour guide to macOS Sierra macOS is the engine that runs your Mac, so it's a good idea to know a bit how it works. macOS Sierra For Dummies is the map you need for navigating the tools and tasks of macOS. Whether you're exploring macOS for the first time or are an experience OS X user looking for info on the newest features in the operating system, this book provides your answers with a fun and friendly attitude. You'll also find steps for using the latest creative and productivity tools that come with macOS. Inside. * Tour the macOS desktop * How to find files faster * The updated Photos and Music apps * Get your Mac on a network * Add music, movies, and books * Get answers from Siri * Share data with mobile devices