The recommended readings for Lesson One, from The Profound Treasury of the Ocean of Dharma, are listed below. 

• The Path of Individual Liberation, Chapter 42: “Mindfulness of Mind,” pages 316–328
• The Bodhisattva Path of Wisdom and Compassion, Chapter 22: “Experiencing Reality in Its Fullest Sense,” pages 159–170
• The Tantric Path of Indestructible Wakefulness, Chapter 56: “Ground Mahamudra: Understanding Things as They Are,” pages 588–598