To make sense of the book you really have to practically follow the steps outlined but when the suggested links in chapter one don't work that isn't a good sign. Using the tools found at those links is a key part of the process the book outlines. This led to me using google to see if I could find other tools that did the same type of thing, which led to me questioning whether his method was best, and using google to find out more, which I was doing before I bought the book...
One of the main reasons I bought this book was because it gives free access to a forum where you can see a continually updated list of tools and the raise issues for the author to look at. I presume the links in the book did work once but the forum has not got updates for those links. I also discovered on the forum that a number of other readers had similar concerns.
Maybe I've just been unlucky but one of the reasons I bought this book was on the basis of postive reviews and I have to say my experience has not been positive.