I read Tribes, by Seth Godin while I was in New York for NYIGF. It was the perfect book to read while attending a gift show. While on the surface the book is about leadership, it's full of lots of super insights on marketing. The overarching themes I took away from the book are that it's okay to question the status quo ("be a heretic") and that change & innovation are keys to success.
I have to return my copy to the library, but I'm already planning a visit to my local bookshop to pick up my very own copy.