Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: This book is not for a self-instruction

I was pleasantly surprised to see a Teach Yourself Tagalog book was finally offered to the public. Upon opening the book, however, it was clear that the book would not do its job. The authors, for one thing, neglected to write stress marking on the Tagalog words so whoever uses this book and tries to pronounce will end up sounding like a blundering idiot. They had a lot of Tagalog literature at their disposal to help them with their explanations that it appears they didn't use. Whoever buys this book will have to ask a native to write the stress marking on each word so they can really learn to speak the Tagalog language. What a shame they published it in its current state!