The practice of the preparatory stages of accumulation and purification allowing entry into the vajra vehicle of secret mantras is intended for those who already have certain basics. They must have already listened to the stages of the path to enlightenment (Lamrim), the essence of all sutras and tantras, have thought about it and have great aspiration and joyful enthusiasm to attain great enlightenment. This collection presents the texts to put into practice these preparatory stages in 4 daily sessions, for those who embark on this path: the preparatory stages, taking refuge including the generation of the awakening spirit, the practice of purification of Vajrasattva and the yoga of master Tsongkhapa.