The following publications are available at any online book seller or they can be found at any Yogastha Sadhana Yoga Shala.
The Yogastha Sadhana Practice Manual - Includes a full description (with photos) ofpostures and vinyasa sequences of all 4 Series, along with over 50 Yoga Sutra Contemplations / Meditations and a full translation of the 196 Yoga Sutras.
A new translation of The Bhagavad Gita - One of the primary historical scriptures on what it means to be a practitioner of yoga.
The Upanishads - A rendering of these classic yogic texts into modern english. A new translation of the 10 principal Upanishads.
The Awakening Echo of Love ~ 108 Poems of Divine Union - Poems and reflective reading inspired by the teachings of Ramakrishna, Meister Eckhart, Kabir, and The Cloud of Unknowing.
The Sacred Yearning ~ 108 Poems of Spiritual Devotion - Poems and reflective reading inspiredby the teachings of Sarmad, Saint Catherine of Siena, Sri Vivekananda, and The Dhammapada