Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Really great summary

I already owned and read a number of the books, but I found it worthwhile to review what I've already gone over.The book contained tight summaries of interesting marketing book.I could use it to help make the elevator pitch and flesh out concepts with my wife, who is launching her own business.The book helps to quickly cover the basics of many important marketing concepts. Some of them are IT / New technology startups - which she isn't interested in, but others may be.