[iMore.com]

iCloud Drive is Apple's online storage service —*a place to keep all your files and access them from all your Apple devices, including your iPhone, iPad, and Mac.
If you're new to iCloud Drive and not sure how to get started, you've come to the right place. Follow along and we'll walk you through how to enable iCloud Drive, pick an appropriate storage plan, and how to better manage your files across your iPhone, iPad, and Mac!

• How to set up and use iCloud Drive
• What iCloud Drive storage plan should you get?
• How to access iCloud Drive files in OS X Yosemite
• How to view iCloud Drive files on iPhone and iPad
• How to control what apps have access to iCloud Drive
• How to manage iCloud Drive syncing over cellular
• How to manually create folders in iCloud Drive on your Mac
• How to migrate files from Dropbox to iCloud Drive, and why you may want to wait
• Clearing up the iCloud Drive confusion: No there's no iCloud Drive app on iOS

Full story from the iMore Blog...