Congratulations - you are coming to the best part of HK - although, I guess that I am a little biased

I've lived here for 10 years and never anywhere else in HK.
There's a web portal all about Sai Kung and if you don't find everything on the website itself, you can ask questions on the forum or even send a message directly to the Explore team and they can help you.
www.exploresaikung.com
Cheers!
Judy