BTW: It's been a bit tricky to find copies in bookstores but any place that I do an event will have copies available. Harvard Book Store has a bunch right now, and there are signed copies at Skylight, where I did an event last week.
Other places you can find it include Powells in Portland. In NYC there are a few at the McNally Jackson in Soho, Book Culture and the B&N at Union Square. In SF, it's in stock at the Green Apple on Clement. In Seattle, Elliott Bay Book Company has copies in stock.
divya