Summary and Info
This book suffers from the fact that it includes information on a beta product. The beta product not only has changed, but it has changed name. Microsoft Expression - Interactive Developer is now Expression Blend. If you don't know this, then you will be lost in several chapters. The book also references an example to show what WPF can do. This is a URL listed on page 11. Unfortunately, like the Expression stuff, this is was also a beta site and the URL now leads to a simple page that says "thanks but the beta is over".
So if you figure out the tool, then you see a great example in chapter 3. Unfortunately, the flow of steps is textual and goes on and on. The organization of presenting the steps you need to do could have been better. When you combine this with the changes that have occurred in the product, things get hard to follow.
The middle section of the book focuses on Visual Studio 2005 and the WPF add-ins. This information is more accurate, but the information isn't very deep. Info on controls, and a bit about things you can do with them, some information on graphics and more. The book then goes back to the Expression tool that as mentioned earlier, isn't quite the same as when the author wrote the book.
The end result - This book will be much, much better when it is updated to the current product. (( I put a more complete review on Codeguru ))