Public transport in Hong Kong.

We haven't got as many stations as the Metro in Paris. But if you are lost, look for these signs.

Panorama inside a MTR station.

If your ride involves going through tunnel, return trip tunnel fee shall be paid by you.

There is exception if you are crossing the harbour. If you catch a taxi from a special harbour-crossing taxi stop, you pay only one-way tunnel fee because other passengers have paid one-way for the driver to come to this side of the island already.

There will be extra charges for large luggage. 

Taxi drivers often round up the fare to the next dollar so it's up to you tip extra. 

City taxi is red and New Territories taxi is blue.  They normally restrict to their own island/district so if you are in New Territories and want a taxi to Kowloon or Hong Kon island, the driver may suggest to take you to somewhere near the city and you have to change to a red taxi.
 

Buses in Hong Kong are mostly air-conditioned and they accept Octopus cards.

A double decker

There are mainly two kinds of mini-buses - green top and red top.

The green top ones has fixed route and some even have fixed stations for getting on and off.

A red top min-bus has a destination and you can stop it anywhere.

The drivers typically don't speak much English so don't expect to ask for directions from them.  Simple "Stop please" just before you arrive works best.