Full text of the Constitutional and the Basic Law can be downloaded from the Hong Kong Government's official webpage. https://www.basiclaw.gov.hk/en/index/index.html
Chapter VI Education, Science, Culture, Sports, Religion, Labour and Social Services
The following subject headings may help you find books and other materials related to Basic Law in iSearch:
Central-local government relations -- China -- Hong Kong
Constitutional law -- China -- Hong Kong
Constitutional law -- Study and teaching (Elementary) -- China -- Hong Kong
The Basic Law of the Hong Kong Special Administrative Region
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The Basic Law of the Hong Kong Special Administrative Region of the People's Republic of China
Introduction to the Hong Kong Basic Law
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The Judicial Construction of Hong Kong's Basic Law
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中華人民共和國憲法 : 中華人民共和國香港特別行政區基本法及相關法律文件