Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Content good, product bad

As the title indicates, the content of the book is pretty solid - it's useful, and even though there don't seem to be enough examples to address each "issue", she'll often break down a technique to explain why it works. I would have given this book 4 stars, now I'd rather give it 2 1/2 rather than 3BUTNot only are there all kinds of misspelled words and grammatical errors, but about 30% into the book, at least the kindle version, the "why this technique works" sections appear to be addressing completely different material. I don't know if the text is jumbled or bits ere deleted or WHAT, and who knows whose fault it is, but I am definitely not getting my money's worth.Like I said the material is good, but the execution of the product that was delivered to my Kindle was terrible. I have no way of knowing if the fault is the author's, but I can't trust someone who creates a faulty product.