There is so much ground to cover on the subject of being new in Hong Kong I feel it needs a second installment...
In the beginning you will have positive intentions about learning the language. You will imagine that it is possible to pick it up from other Hong Kong friends you meet. You may even consider or even attend Cantonese lessons. In about a year, or longer, you will feel confident to say the name of your street in Cantonese to a taxi driver and even though his reaction will undoubtedly be 'HA!" with a confused tone and you have to repeat it 27 times and have a conversation in English with his control room in English, you will have made progress because at least the words are being emitted from your mouth. You will also be more confident to ask the taxi driver or mini bus driver to stop in Cantonese. Top tip on the bus 'Pass the Jam Old Boy' gets the mini bus to stop, try shouting it out from the back seat today and see what happens. You are allowed to feel proud if it stops where you want.
Even though some words people say to you are actually English they have a Cantonese twist which make them harder to understand. Just because you start copying these words doesn't mean you can speak Cantonese although you will be understood. For example MTR low for MTR, capak for car park, ecuse me for excuse me or the strange custom of saying Cheers when posing for a photograph when obviously the word is Cheese (what does it mean anyway?).
Hong Kong public tranpsort system is the world's best, and I mean that most sincerely folks. But to start with the names of the stations will be just noise and your journey will involve intense interest in the map with the little lights. Your heart rate may increase as you near your station with the anticipation of what to do once you get to street level. You will be one of those annoying people who dither and delay when scanning the magical Octopus card (have you got one yet!) or, god forbid, at the bottom of escalators. You may even be at risk of looking like a tourist - some one who reads the Exit signs and carries a map trying to find their way. It is your mission not to look like a tourist by the way so avoid huge baggy shorts and socks with sandals especially in Central or TST and try not to be so pale.
As a newbie in Hong Kong some of the food may be a challenge. Challenging Food Chop sticks may hinder your progress but believe me you'll master those quickly. I doubt that pig intestine, chicken's feet or a number of deep sea endangered species will ever become normal but try to be receptive to the new food and products you see in restaurants and supermarkets. It could be a mistake to be constantly craving that particular gravy mix or condiment from back home. It is known for some expats to bring back suitcases of their favourite consumable or even have their mother send it in bulk as a special treat. Stop this at once. You can get everything in Hong Kong. Absolutely anything you want is available you just need to know where to get it (be prepared to pay for it) and if you don't then ask me!
Useful sites to make your life easier