I am using this book to supplement my Japanese evening classes.
Well written, with many examples of alternative styles for Hiroganna characters, this book really can help the complete beginner, like me, to get a grip on an otherwise (seemingly) daunting subject.
I'm actually starting to make positive progress thanks to buying this aid. The idea of mixing English and Japanese text within the same sentence throughout the book is a great one. It really makes you learn to fill in the 'foreign' gaps with your new knowledge.
If you are serious about learning then buy it - it's a no brainer.