This is my full translation of Uzaku-shiki Mahjong Gakushuu Haikouritsu by G Uzaku which I originally made public in April of 2022. I’ve cleaned and revised it since then.
Uzaku’s Guide to Tile Efficiency is a textbook on tile efficiency in Japanese mahjong aimed mostly at beginners, but it also covers intermediate and advanced concepts. In the pdf, the table of contents are hyperlinked to the pages they point to for ease of navigation. If you are interested, I have made the font used for displaying inline tile illustrations that I used in this book available here.