A Couple of Helpful iCloud Links
iCloud can be a bit puzzling to use if you’re accustomed to Dropbox or other cloud storage spaces that give you more granular, or detailed, control over what you’re backing up.
This link shows you how to determine whether you’re using your iCloud storage wisely:
Managing Your iCloud Backups
This link can be helpful if you’re sharing an iTunes account with a family member:
How to Configure iCloud If You Share an Apple ID
And finally, here’s a link to the Apple iCloud website where you can find out what is backed up when you enable iCloud. Be sure to click through all of the iCloud categories at the top of the window.
Features of iCloud