Introduction to Emptiness - As Taught in Tsongkhapa's Great Treatise on the Stages of the Path — by Guy Newland
This work explains, that emptiness is not a mystical sort of nothingness, but a specific truth that can and must be understood through calm and careful reflection. While the exposition is rich in technical detail and textual reference, it is absolutely accessible to the beginning student.
The Great Treatise on the Stages of the Path to Enlightenment — by Tsongkhapa
This is one of the brightest jewels in the world's treasury of sacred literature. The various stages of the path are presented so clearly and systematically that they can be easily understood and are inspiring to put into practice. The wisdom found in the nearly 1200 pages of this work is truly astonishing and liberating.
The Universal Vehicle Discourse Literature (Mahayanasutralamkara) — by Maitreya & Asanga, with commentary by Vasubandhu
Translated from Sanskrit, Tibetan, and Chinese - the present work contains a fully annotated, critical English rendition of the Discourse Literature along with its commentary (bhasya) by Asanga's brother - Vasubandhu.
The Way of the Bodhisattva (Bodhicharyavatara) — by Shantideva
Treasured by Buddhists of all traditions, "The Way of the Bodhisattva" (Bodhicharyavatara) is a guide to cultivating the mind of enlightenment, and to generating the qualities of love, compassion, generosity, and patience.