Q1: Is there any additional resource for learning Earth Science?

Stephen Hui Geological Museum at HKU is the first and only geological museum in Hong Kong. Please visit the following web page:
http://www.earthsciences.hku.hk/shmuseum/index.php.

Museum of Climate Change (MoCC) is situated at CUHK. Please visit the following web page:
http://www.gaia.cuhk.edu.hk/index.php?lang=en.

Hong Kong Global Geopark of China:
The web page includes information about Geo History of Hong Kong, Rock Classification and online games.
Please visit the following web page:
http://www.geopark.gov.hk/en_index.htm.

Q2: Is there any online resource about landslides in Hong Kong?

"HK Landslides" e-book was launched by the Geotechnical Engineering Office (GEO) of the Civil Engineering and Development Department. The e-book illustrates the history of landslides in Hong Kong with vivid and user-friendly interfaces.

[HK Landslides e-Book from CEDD]

http://hkss.cedd.gov.hk/hkss/eng/when_hillsides_collapse.aspx
http://hkss.cedd.gov.hk/hkss/eng/when_hillsides_collapse/pdf/1972-1975.pdf (Download the chapter - The 6.18 Disasters)
http://hkss.cedd.gov.hk/hkss/eng/when_hillsides_collapse/pdf/WholeBook.pdf (Download the whole e-book)

[YouTube Video from CEDD]

Computer Animation of the 1972 & 76 Sau Mau Ping Landslides
https://www.youtube.com/watch?v=tbCX9NKdEwo&index=2&list=PLdrtBmVhtmn-ZMn_JMGhEvtx4ilIGkQoR
Computer Animation of the 1972 Po Shan Road Landslide
https://www.youtube.com/watch?v=Nvcs80Ty7WE&index=5&list=PLdrtBmVhtmn-ZMn_JMGhEvtx4ilIGkQoR
History of Landslides
https://www.youtube.com/watch?v=JGVCE2yev30&index=8&list=PLdrtBmVhtmn-ZMn_JMGhEvtx4ilIGkQoR