Sadly these guides are not dedicated to the Samsung tablet range, but they are guides that will give a good start to users wanting to understand a little more about the "how to" & "where is" of Android. The Nexus range are the "official", in house, Google branded products, of course

Android 4.1.x / 4.2.x Jelly Bean

Android OS Help - the link also provides access to the Google guides to ICS, Honeycomb & Gingerbread

Nexus 7 Guidebook

Android 4.0.x - Ice Cream Sandwich

Galaxy Nexus Android 4.0 Guide (pdf download)