I have received many Dzogchen and Mahamudra teachings over the last couple of years and did read many old and new texts. This one by H.E. Garchen Rinpoche is now my favorite. If you want to understand how to practice Mahamudra and advance in your practice, do yourself a favor and buy this book. He is a truly realized master - just the text can transmit you tons of blessings from the Kagyu Mahamudra masters.
“I take refuge in the precious lama and the Buddha. Please grant me the magnificent blessing to release my self-grasping. Please give me the magnificent blessing that nothing is important to me besides the Dharma teachings. Please grant me the magnificent blessing to realize the nature of my mind, the unborn or Dharmakaya in an instant. Please grant me the magnificent blessing to become free from all the delusions. Please grant me the magnificent blessing to arise all the appearances of samsara and nirvana as the Dharmakaya.”
Some foolish words put into a review by a nobody sitting in Colombias mountains. May this book and its teachings spread and may all living beings be able to benefit from this.