Of the three or so books I bought to help figure out Websphere, this one is doing the best job. I don't love the book because it dives right into tutorials, and doesn't always give me enough of a big picture. But this big picture can be a difficult one to convey. When I needed to deploy an app and get the JNDI names right for getting to my data source, this book had a chapter that explains exactly that. It explains both the steps to get it done in the GUI, and a bit of how and why it works like it does.I looked at some other books from IBM press, like Enterprise Java Programming with IBM Websphere, and they were a bit too much, too soon for me. I might, however, recommend the Redbooks, if you can get them.