Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best book out there:)

I am a photo enthusiast trying to learn photography. Purchased Nikon's high powered DSLR camera, then purchased 5 books on photography. This was one of the five I stumbled upon by accident. It surpassed the rest and is worth its weight in GOLD!! Everything is well explained. It's goal is to not only make you a better photographer, but also to help you understand the mechanics of a camera. It will exceed your expectations! Loaded with pointers, tips and tricks. Loved it! Informative/priceless:) -should cost more.