Self Liberation through seeing with Naked Awareness - Padmasambhava - Dzogchen
This is a very comprehensive teaching and could suffice as a means towards completion in itself after some preliminary study and exposure to the topic. We tend to wander around, (what is next or better?) and I don't discourage an eclectic or scholarly approach if that is your way of seeking. This is what is referred to metaphorically, as a "nail" in the Dharma.
It begs the question: How do you know you have found what you are seeking?
The amount of that study depends on many variables, but let it be known that you are listening to a reading of import and the repetition of a transmission of this caliber can be auspicious and beneficial to all beings. This is a cycle of the approach to pure awareness that is already here, so to speak. The key is a direct, experiential transcendence.
Self Liberation through seeing with Naked Awareness - Padmasambhava, Translated by John Reynolds.
A text belonging to the same cycle as The Tibetan Book of the Dead, this instruction on the method of self-liberation presents the essence of Dzogchen, The Great Perfection, regarded in Tibet as the highest and most esoteric teaching of the Buddha. Teaching the attainment of Buddhahood in a single lifetime, this text was written and concealed by Guru Padmasambhava in the eighth century and rediscovered six centuries later by Karma Lingpa.