Reference collection is a good place to start your research, such as biographies, dictionaries, encyclopedias, directories, bibliographies, etc.
Dictionary of Hong Kong Biography
Handbook on Educational Policy in Hong Kong (1965-1998) = 香港教育政策手册
Editors, Yin Cheong Cheng, King Wai Chow, Shin Kam Yeung, Wing Ming Cheung; 1998
香港特別行政區基本法辭典 = Dictionary of the Basic Law of the Hong Kong Special Administrative Region of the People's Republic of China
香港 : 新香港年鑑有限公司; 2001
圖解香港手冊
徐振邦, 陳志華編著.; 2015