I learned so much from Lisa and Janet. I came to agile from a development background and after going through a failed transformation where the testing of our code was an issue, I took a certification class for Agile Testing ICp-TST from ICAgile. We used this book as our Textbook. Now, I have so much more of an idea how to coach the other half of agile developers, the folks who do the testing. I read every chapter in this book and several in its sexual. It is the most complete book on Agile Testing there is.