Hong Kong has more forms of public transport than you can shake your hiking stick at. There are trains under and above ground, trams including a funicular, ferries slow and fast, taxis, buses, minibuses. As well as being varied, public transport is abundant - so you can readily get to even many of the more "remote" places. If you plan on using public transport in Hong Kong, consider getting yourself an Octopus stored value card: it'll make your life much easier.
HK Public Transport
If you plan on using public transport, consider getting an Octopus stored value card
My farourite Hong Kong bus ride is east from Mui Wo to Ngong Ping, heading along the south coast of Lantau Island, then up into the hills.
Buses abound in Hong Kong, with even small villages served by regular minibuses.
Taxis are abundant in Hong Kong. In most city areas, you'll find just the regular, red taxis; in the mainland New Territories there are green taxis, while blue taxis serve most of Lantau Island.
Ferry companies serving islands in Hong Kong.