What cultural faux pas should I try to avoid making in Melbourne?

"When visiting Melbourne, it is important to be mindful and respectful of the local culture. Common cultural faux pas to avoid include failing to queue in line when waiting for a bus or train, not greeting or making eye contact when speaking to someone, speaking too loudly or profanely in public spaces, or failing to close a door after entering or exiting a room. Additionally, it is also important to avoid discussing sensitive topics, such as politics or religion, except for with close and trusted friends," mentioned another expat when asked about moving to Melbourne, Australia, Australia.