[vamin]

If you want actionable, I highly recommend Jean-Luc Doumont's "Trees Maps and Theorems." It's like a way more practical, actionable version of Tufte's work. Probably my favorite book on communicating with data. He's a great speaker as well, do take the opportunity to see one of his talks if you can (I believe some are on YouTube).

[matiasz]

I completely agree! Doumont often gives talks at universities that are open to the public.

http://www.principiae.be/X0200.php