I picked this off the new-book table at the Portsmouth Public Library on impulse. It's short. The author, Alberto Cairo, is "Knight Chair in Visual Journalism at the School of Communication of the University of Miami." His blog is here.
I was slightly disappointed at (1) the basic level and (2) preachiness. There wasn't much in here that I didn't learn long ago, although the presentation is good, examples are fresh.
If you're looking for a good introduction for a bright high-schooler, this might do the trick.