I'm not a huge fan of Khoi's work, but I do respect his abilities enough to have had my interests piqued when I learned that he'd written a book on what it is he does. The entire point of titles like these is basically to watch how other people like to work so you can compare and contrast the solutions they arrive at against your own, and in that regard, it does not disappoint. Unfortunately, the bulk of the text is a lot of thoroughly irrelevant filler that talks down to its target audience as though they have no idea what designers do or how they do it. The first four chapters in particular are a complete waste of time, and even when you get to the good parts, there's a lot of over-explanation and exposition that doesn't need to be there. If you took out all the fluff, you'd basically have a really long blog post's worth of information, and I'm hard-pressed to justify the fact that I spent this much money on it.
And the font the entire thing is set in is just ridiculous. I know we're all really jazzed about the Tron sequel and all, but was this typographic homage to 80's era futurism really necessary?
Worth a look, but borrow someone else's copy if you can.