I purchased this book, because the CD instructions That were supplied with the LX5, were a little confusing in places, and I needed something I could dip in to as and when required. The information in the book is easy to get to, and more importantly, it's easy to understand. I fully recommend anyone who wants to get to grips with the LX5, to buy this book, which will enable them to use their camera to it's full potential. I now have much more control over my camera and enjoy using it when ever I can. I also purchased Understanding Exposure, by Bryan Peterson, which has increased my confidence in photography even more. I no longer feel a complete novice anymore, because with this information,and loads of practice, it is a very satisfactory hobby. I hope this helps.