I love Seth's books, he has an incredible energy and excitement about everything he does. This is an amazing book on so many levels. It contains lots of great marketing ideas, but also many things that will set you thinking laterally. I recommend reading a couple of pieces at a time, as they sink in you will be surprised at all the other stuff that pops into your head.
One author who is better to hear than read.
A nice article from the HBR about the business advantages family businesses create. Well worth listening too especially if you are starting a business as it will set you off in the right direction. Some really useful nuggets.