[eluser]Gav[/eluser]
Hey, in poor bullspit's defence, and in Ellis' credit, the user guide is great for getting the basics of CI sorted in your head, as well as just being a reference piece while coding.
Perhaps turning the exact userguide into print is a bad idea for a book as it would outdate quickly (didn't I just have this discussion lol), but an indepth CI book, covering everything from getting started with CI, to complex examples in all the features at the time of writing, updated yearly or something, would sell. I bet my bottom dollar.