The sooner you pronounce the city name the way the locals do, the better. Not MELbin, but MALbin: Salary–celery Merger, a proudly Victorian peculiarity. (Whaddaya mean, New Zuhluhnduhrs do it too?) And never, ever pronounce that <r> in Melbourne. What do you think this is, Melbourne, Florida?
Never say anything good about Sydney. It’s against the law.
As others have said, learn to coffee snob. See for example Guide to America | Chaser Guides. The print version has the gem “Every day, Starbucks sells 4 million cups of coffee. And not one of them is any good.”
Go for weekend drives, down the Mornington Peninsula, up to the hills (towards Mt Dandenong), or down to North Hipsterville Daylesford. Thank me later.
Maybe get me a latte or something. Strong, no sugar.
There are divides in Melbourne:
There is a North Of The River/South Of The River divide. It’s not social, it’s about travel convenience. It’s easy to be in a rut and never venture across the River. Don’t fall for it unless you haven’t bothered to get a car. There’s good things to be experienced both sides of the river.
I once gave an American linguist a tour of the inner south. It was all new to him: all the Melbourne Uni academics who had hosted him had never taken him further south than St Kilda. ST KILDA!
There is a West Of The River/East Of The River divide. That one is social, and it’s to do with lack of infrastructure in the West. Which means the West has been historically working-class and aggrieved. Demographic pressure though means that gentrification is happening even in the West; Williamstown is already shmick, and Footscray is now only selectively grotty. (Why yes, I do live East Of The River, why do you ask?)
There is a Hipster/Burbs divide. That one is real. Do not succumb to it on either side. The inner city is wonderful and vibrant. It’s also smug. And the middle range burbs are no longer a wasteland; there’s nice greenery and good social enclaves and a booming café culture. (The outer burbs… well, yeah. They’re dormitory suburbs. Particularly estates. Berwick’s nice though.)