Kindle Questions

I'm trying learn more about the Kindle's notation functionality, and I'm hoping to avoid shelling out the dough to figure this out first hand.

My recollection based on limited usage is that there is simply an ability to add a note to a particular passage, with no distinction between a tag like "politics" or "campaigning" and a note like "bob will love this explanation of why kerry lost." Is that correct?

Wishful thinking: If you're a Kindle owner in NYC, would you be willing to let me use it in your presence for a few minutes at your preferred location? I'd be more than grateful.