“Apple’s iCloud service, paired with iOS 5 and Lion, offers users a whole wealth of new sync features, access to purchased content, and geolocation fun,” Serenity Caldwell reports for Macworld.com.
“Unfortunately, as iCloud is the company’s fourth online service iteration—fifth, if you count registering for base-level Apple IDs—trying to upgrade can be confusing at best, slam-your-head-against-a-wall-in-frustration at worst,” Caldwell reports. “To help ease the pain (and keep your walls dent-free), we’ve put together some common upgrading scenarios for migrating to iCloud.”
• If you have an Apple ID that you want to use for sync and purchases: Convert it to iCloud.
• If you want to sync with one ID and purchase with another: Convert one to iCloud; use the other to log into your Store credentials.
• If you want to sync with multiple IDs: Hook up your primary account to your device; add a secondary account for calendar and contacts syncing using the Mail, Contacts & Calendars pane in System Preferences on your Mac or in the Settings app on your iOS device.
Much more in the full article – recommended – here.