Startup Communities by Brad Feld - is an AMAZING book about the different programs Boulder CO has implemented to help develop their tech community. If you haven't read it, I would HIGHLY recommend it!
Traction by Gabriel Weinberg & Justin Mares - Great book about marketing in the 21st century.
The Lean Startup by Eric Ries - An amazing book about starting your business for as little money as possible using a hypothesis and test approach.
The Pumpkin Plan by Mike Michalowicz - Reworking your business to define and target your ideal customers
http://foundation.bz/ - Fireside chats with some of todays best entrepreneurs