完全理解 日本料理の基礎技術Complete Understanding: Basic Techniques of Japanese CuisineEssential gear guide. Sharpening skills directly improves the taste of your dishes.
包丁入門研ぎと砥石の基本がわかるIntroductory Guide to Japanese Knives: Understanding Sharpening and WhetstonesClassic text by the same publisher, diving deep into whetstone essentials.