The book works best when you treat it as a diagnostic tool. If you miss a question in the Listening section, don't just check the right answer. Go back to the audio transcript (included in the book) and find exactly where you missed the "signal word" or the key detail. Are There Any Downsides?
This is where the book has limitations, though not necessarily faults of the publisher. official toefl ibt tests with audio volume 1 work