Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Essential Vajrajana Foundation Treatise

You would be hard pressed to find a book with more to offer with respect to the most fundamental teachings and practices of Vajrayana. All of the Lam Rim points are clearly spelled out here, as well as the most basic contemplations and meditations. You could read this book a 1,000 times and gain from each successive reading.