500,000 Preliminary Practices:
the preliminary/foundation practices of Vajrayana Buddhism are profound and powerful means for effecting a deep purification and transformation. They prepare the practitioner for path of Vajrayana and teachings of Dzogchen and lead gradually towards the experience of Enlightenment. The traditional preliminary practices (100,000 times each) of refuge, Bodhicitta, vajrasattva, mandala, and guru yoga.