IOS 8 User Guide

[Bambino]

As said before, not an Apple person, but I came across this article and this looks a pretty good comprehensive guide. Might help. Might not. Can't hurt to read it though. CNET is a reliable source:

http://www.cnet.com/how-to/the-complete-guide-to-ios-8/?tag=nl.e404&s_cid=e404&ttag=e404&ftag=CAD1ac...

[Anonymous]

Nice guide and thank you for sharing.

Comprehensive ones from iClarified Here also and from iMore Here

with the upgrade to iOS8 an App came bundled with it called 'Tips' which should come in handy for users. 

[Cleoriff]

It is comprehensive @Bambino  Also quite easy to understand. I don't say that often about phone technology