I am learning so much about features, new AND old, by watching this video that another poster recommended:
Galaxy Note 10.1 Jelly Bean 4.1.1 In-Depth Review Pt.1 - YouTube
(Galaxy Note 10.1 Jelly Bean In-depth review Part 1)
My new favorite tip is the Quick-Command. Hold down the button the S-Pen and draw a line up from the bottom of the screen. A little window opens and you can launch and Internet search, email to someone, or maps, just by writing simple symbol. What's even cooler is that you can then store your OWN symbol to launch just about any app you have installed.
Who thinks of this stuff?? Great fun!