I read this after reading several heavy literary critiques of Shrew and a fairly weighty copy of the play text itself. I use these kinds of notes as a handy quick reference guide in these situations, and so wasn't expecting much, especially as sometimes these kind of books can be hastily churned out and sometimes contain errors.
I was surprised by how good this is (and was able to use my other extensive reading to back up these claims for quality and veracity). It gives excellent references to all kinds of materials including websites, critical texts and films, many of which are bang up to date. It covers all the key points you look for in a study guide, i.e. brief plot summaries, characters, themes etc, but also provides excerpts of more in depth textual analysis, which are incredibly useful.
The care taken to provide context for how the play has been treated over the years, what it would have been like in its original theatrical setting and how we treat it now, was fantastic to see.
If you are studying this book at GCSE, A Level or even at undergraduate level I recommend it highly. It is worth every penny.