Manual of Zen Buddhism by Daisetz Teitaro Suzuki (1935) was fully intended to be an actual Zen manual, full of liturgy, ritual and explanations. D.T. Suzuki, the preimminent and enthusiastic ordained Japanese Zen Scholar, presents the subject matter as always with perfect confidence and numerous flying sparks. Good book to have on hand if learning how to perform formal Japanese Zen liturgy or hosting your own sittings.