From the perspective of a programmer who hasn't touched basic since he had a Sinclair Spectrum, I found this book got me up to speed reasonbly quickly. However I suspect it will attract a fairly small audience - a non programmer would find it too terse to be a good learning book, and an experienced VB programmer would probably be better off with a book specific to the environment they're using (eg, ASP) because this book does not cover any enviroment specific objects, and VBScript has no enviroment specific functions. It does however cover the filesystem objects and the dictionary object, which is handy.

Every now and then I get frustrated with the book when I can't find a function that I want, but then I usually discover that the function doesn't exist in VBScript, which is really such a trivial language that a pocket reference can cover it more or less completely.