People always ask me how can I know about all these exhibitions, where can I find all the information about recently ongoing exhibitions.Actually, it is very easy if you pay some attention.
First, MUSEUMS, go to any museum you know, there will be thematic or permanent exhibitions throughout the year.
http://www.museums.gov.hk/
This is the official website about all the public museums in Hong Kong, you can find the latest news about exhibitions or activities in all these museums.
Second, WEBSITES. When you surf the internet, you can always see some ads or shares of you friends about exhibitions, but here I will introduce you a website called Timeable.
http://www.timable.com/expo
Here you can find every details about any ongoing event in Hong Kong, if you want to go out for fun but have no idea where to go, just have a look on this website, I am sure you will always find something interest you.
Third, OUTDOOR ADS/POSTER.
Just have a notice when you walking in the subway.
Fourth, BOOKLETS.
There are a lot of free booklets you can pick up at every exhibitions.