Five Ranks of Tozan and Other Zen Classics - "Five Ranks of the Apparent & the Real" and "The Song of the Jeweled Mirror Samadhi" by Tozan Ryokai. "The Keiso Dokuzi" by Hakuin. "Three Kinds of Fall" and "Five States of Lord & Vassal" by Ts - http://www.kaihan.com/fives.htm
Lankavatara Sutra - Includes a commentary by Stephen L. Klick. - http://www.buddhistinformation.com/lankavatara_sutra.htm
Song of Enlightenment - By Zen Master Hsuan Chuen. - http://www.hsuyun.org/Dharma/zbohy/Sruti-Smriti/Gathas/song-of-enlightenment.html
Harmony of Difference and Equality (Sandokai) - Translated by the Stanford Zen Translation Project. Text is annotated for instrumentation during services. - http://www.stanford.edu/group/scbs/sztp3/translations/gongyo_seiten/translations/part_1/sandokai.html
Four Great Vows - The basic vows of buddhist students. - http://www.io.com/~snewton/zen/fourvows.html
The Four Great Vows - In English and Japanese. - http://www.zenproject.faithweb.com/sutras/great_vows_for_all.html
The Five Wonderful Precepts - Rephrased by Zen Master Thich Nhat Hanh, and represented in a way that can be understood more easily for the people, especially the young in the West. - http://www.saigon.com/~hoasen/precept.htm