A couple of days ago I posted a short article about this free book, and where you can find it. There is now another location. Thanks to Peter Twining and his colleagues at OU Vital, it's now available online in HTML format (though you have to register -- free -- on the Vital website to access it).
Peter informs me that people can link to individual sections of the book within the vital community by copying the link for the section in question from the menu that is visible on the left of each page when you are looking at the book.
e.g. http://www.vital.ac.uk/community/mod/oucontent/view.php?id=4286§ion=8.10 links to the Global Penpals case study (if you are logged into the Vital Community).
It's quite a nice, easy to use interface, with an index of projects down the left-hand side, as you can see from this screenshot.
The Amazing HTML version