Q: Is there any written documentation on iCloud and how it functions?

iCloud Support

http://www.apple.com/support/icloud/contact/

iPad Manual

http://manuals.info.apple.com/en_US/ipad_user_guide.pdf

You are most welcome

Managing (iCloud) Data on Your iPad

http://www.peachpit.com/articles/article.aspx?p=1899113

iCloud: Backup and restore overview

http://support.apple.com/kb/HT4859

Check iCloud storage & backup space on iPad

http://www.urltips.net/check-icloud-storage-backup-space-on-ipad/336/

iCloud: Troubleshooting creating backups

http://support.apple.com/kb/TS3992

 Cheers, Tom