i) Visa requirements
Unless you are an Australian or New Zealand citizen, you will need a visa to enter Australia. All other passport holders must apply for a visa before leaving home. You can apply for a visa at your nearest Australian Consulate. You can also apply for certain types of visas online.
June is winter month in Melbourne, the weather will be cold. Temperature during this month is generally min 5° C and maximum about 15°C during the day. You are advised to carry woolens.
iii) Electric power supply
Mains voltage in Australia is 230V 50Hz. The plugs in Australia have two flat metal pins shaped live a "V" and some may contain a third flat pin in the centre.
If your country does not use appliances within the 230V 50Hz mains voltage range, you will need to purchase a voltage converter
If your country does not use the same sockets as Australia, you need a power adapter.
In an emergency, ring 000 for fire, police or ambulance.