Learn how to use Apple's iCloud service to share your content across all your Apple devices. This indispensable guide to Apple's iCloud service walks readers how to share their iTunes songs, photos, books, apps, files, email, contacts, and calendars across their PC, Mac, and iOS devices. Readers will learn how to create documents in iWork apps--Pages, Keynote, and Numbers--and edit them on any device, with iCloud keeping the files up to date. Readers will also learn how to back up important information via the cloud.