If you, colleagues, and/or friends need help working with iOS 8, Apple has released THREE user guides in iBooks format.
ALL guides are free to download and use.
iPhone User Guide for iOS 8
“The iPhone User Guide covers iPhone 6, iPhone 6 Plus, iPhone 5s, iPhone 5c, iPhone 5, and iPhone 4s. ”
iPod Touch User Guide for iOS 8
Note: We would also suggest taking a look at this article from ZDNet and consider using the iOS privacy suggestions.