I am one of the authors on a major title, Essential Windows Communication Foundation, in the .NET Development Series for Addison Wesley. My co-authors and I spent a good amount of time writing this book so that the every developer that reads it can learn something.
Order Essential WCF on Amazon.com
One major takeaway from the experience "Writing a book is extremely hard work." I personally spent many days and nights at Starbucks in many different cities (Austin, Acton, Concord, Westford, New York, Seattle, Redmond, and many more) writing the book.
We hope you enjoy reading the book and write great WCF applications.