If anyone is interested and hasn't picked up the book yet you can grab it here: http://shop.oreilly.com/product/0636920022565.do
Use the coupon DSUG for 40% off the physical book or 50% off the e-book. If that code stops working try TIM40 for 40% off.
I'm not affiliated with the author or O'Reilly and that URL doesn't have any kind of referral code in it. Just passing on the savings I found when I went to buy the book today to the GB community :)