Instruct: Classify a review into positive or negative sentiment.
Query: Great Book! Bad binding :(

This book is extremely informative and definitely worth buying. I am a beginner and I have learned so much just from reading this book.The only thing wrong with it is the binding is horrible! I have had this book for about a week and the pages I have read have come completely loose from the binding! They are falling right out. I am going to have to tape every page to the next page to keep from losing them. I am very dissappointed about that since it is an excellent book and very beautiful,and one to keep for a long time or pass along to others, but it's not going to last long and the tape is going to make it quite ugly compared to its perfectly new state.