Scouting in Hong Kong, 1910-2010: Citizenship training in colonial and Chinese contexts, originally issued in 2011 as a hardcover book when the Hong Kong youth movement celebrated its centenary, is republished with revisions in 2024 as a paperback and an ebook. The narratives and analyses developed here covered the "what, how, when and who" and the "why and so what" of the development of the Hong Kong Scout Movement from 1910 to 2010, using a large volume of primary sources. It tells the story of Hong Kong Scouting based the theme of citizenship training for youth and its defining categories, esp. that of race, class, gender, and age, both colonial and post'colonial. The book is also richly illustrated with interesting and instructive images, many of which came from the Hong Kong Scout Archives. The study, originally based on a Ph. D. dissertation, is not meant to be an institutional hagiography. Instead, it is a critical study aimed at both general readers and readers with more specific interests, and should enrich their understanding of the histories of Scouting, youth, citizenship education, the colonies, the British Empire, and decolonization, China and Hong Kong.