邊本書有講比較詳細的香港法律？

Unfortunately, there is none.

What interesting is lawyers in Hong Kong work like a cartel. In order to protect their own interests, they will not author books or publications that can harm their businesses.

Even there might be some, they simply discuss the issues in brief.

At this moment, the website provides the most up-to-date information:

http://www.hkclic.org/tc/topics/

《香港法概論（新版）》:
http://www.cp1897.com.hk/product_info.php?BookId=9789620428418

basic law
(very detail)