Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Entertaining, but not educational

While this book is generally on with its observations of general human behavior, it should in the relationship section, not psychology. Its pop-psych style of unsubstantiated examples doesn't provide much valuable information for you to learn from. It's an entertaining read, but when all is said and done, it's difficult for a reader with any knowledge of the MBTI to feel like they've learned anything worthwhile. If you want a book about relationship quirks, this is the one. Otherwise, look for something else.