Among the preliminaries of the various lineages, the Dudjom Tersar Ngondro of the Nyingma tradition is possibly the most concise.
Written, then concealed in the eighth century by Padmasambhava (Guru Rinpoche), it was intended for these degenerate times when few people have leisure to practice. His Holiness Dudjom Lingpa revealed this treasure; his incarnation, His Holiness Dudjom Jigdral Yeshe Dorge, clarified the text and taught it widely.
The Dudjom Tersar Ngondro is an extremely powerful practice:
(1) for turning the mind toward dharma,
(2) for purifying obscurations, and
(3) for bringing forth the qualities of realization.
It enhances devotion to the dharma and receptivity to the highest level of teachings, the Great Perfection.
For practitioners with receptive minds, the Great Perfection perspective can evolve from ngondro itself.
The Dudjom Tersar Ngondro—succinct, unelaborate, and grounded in guru yoga—provides a superb means of opening the door to the nature of mind.
(His Eminence Chagdud Tulku Rinpoche)
A downloadable PDF copy of the Dudjom Tersar Ngondro may be obtained at the following link:
The essence of the Buddha dharma is realized most swiftly through the practice of Dzogchen, the Great Perfection. Through guru yoga, the life force of the ngondro, true understanding of Dzogchen awakens in one’s being. (Lama Drimed Norbu, spiritual director of Chagdud Gonpa Foundation)
Source: Tromge, Jane. Ngondro Commentary: Instructions for the Concise Preliminary Practices of the New Treasure of Dudjom. Compiled from the teachings of H.E. Chagdud Tulku Rinpoche by Jane Tromge. Junction City, CA: Padma Publishing, 1995.