I am a keyboard fan, I detest using the mouse and I always try and key my hands @ the home keys @ all points since it is so much faster. That being said I wanted to mention on my favourite shortcut keys: Ctrl-G which brings focus to the navigation bar in OneNote (that thing on the far left hand side). Many times I will want to move from my general work notebook (my 1st notebook open) to the OneNote 14 planning notebook (the 4th notebook I have open). Most people would get the mouse and click on the notebook and then click around some more. I will just hit Ctrl-G, down arrow a few time and then enter.
It works great!