Read about it here.
Or go to Amazon.com and (if you're interested) buy it from Practical Books -- the retail division of the publishers. You can use your Amazon.com account for everything, and the book is shipped directly from Paramount Books. You'll probably get it faster — along with saving a few dollars ($5 discount vs. free shipping).
Or you can order it directly from the publisher, Paramount Books. Use this promotional code: CNY+ and save $5.00. You can also order five or ten copies at a discount. Email them about that.
The last two alternatives are the best bet if the book is sold out at Amazon.com.