Much of the the book is loosely based on material I have posted on this blog over the past few years. This material will no longer be available here, though I have left up a couple of posts that weren't used for the book. (I have also preserved the old list of 'Previous Posts' on the right, as a memento, and as a taster for the book, but only 6 & 17 (which weren't used in the book) are still live links. If by any chance somebody wants to check something from the removed posts, just ask--I can still access them myself.)
I'm expecting to start putting up some new posts soon, especially once the book is out, so watch this space.