The first time I read this book I had the idea that this was a very simple book. Mostly basic teachings about Samatha (Zhine or Calm Abiding meditation) and Vipassana(Lhatong or Insight Meditation). I was under the impression that It was very much like the Theravada teachings but with a Tibetan Buddhist flavor, so I was a little disapointed. Then I spoke to my lama and decided to translate the book into spanish. After translating a few pages I started to understand that as it occurs with many tibetan buddhist texts the words have many meanings and different levels of depth. Now I can say that this is a book where you can find teachings and meanings for all kind and level of practicioners as well as a profound description of the Five-Fold Mahamudra practice as transmited in the Drikung Kagyu Lineage.The book contains quotations from accomplished masters of the kagyu lineage as well as instructions for practice. Fortunatelly, I does not deal with the preliminaries since there are many books and resources in the Internet which deal with the matter. HH Drikung Chetsang Rinpoche, Head of the Drikung Kagyu Lineage, has granted permission to publish the spanish version of this book. Tashi Delek.
Another review decribed this book as being"...the clearest presentation of Mahamudra meditation practice available in English." I agree. I look for books on Tibetan Buddhism that are well written and concise. Very few are, but this book is one of the best. It was written by the spiritual leader of the Drikung Kagyu lineage. It does not; however, cover the preliminaries in detail. For that I can recommend Foundations of Tibetan Buddhism by Kalu Rinpoche (Kagyu) or Tantric Practice in Nyingma by Khetsun Sangpo (Nyingma).