Although I knew the theory in this book I was aware that I was buying a book aimed at beginners. So why buy it as a more advanced player? Being completely self taught, I have picked up alot of bad habits that (like many) limit my playing. This book is great for ironing out the creases in anyone's playing and so I would recommend it anyone who wants to perfect the art of bass playing as the first steps to do so are explained fully in this release. £5? Come on, well worth it. (Posted on 11/12/09)