Instruct: Classify Amazon reviews into positive or negative sentiment
Query: needs an update

I love this book. The exercises help me a great deal to releive my back pain. However - it could use an update...the photographs are black and white and a poor quality. So - it's hard to see by the picture alone on how to do the exercises. I have tried all kinds of yoga DVD's - and always come back to this book and the 28 day plan.