Here is some vocab that may be helpful in Sydney:

Agro- Aggravation, bother, aggression

Ambo- Ambulance

Arvo- Afternoon

Aussie- Australian

Bangers- Sausages

Barbie- Barbeque

Barney- Argument

Beaut- as in "you beaut," if something is considered good

Big smoke- The city

Billabong- A waterhole

Billy- Container for boiling tea

Bloke- Man

Blowy- Blow fly

Bludger- Lazy person

Blue- A row, quarrel, fight

Bluey- Nickname for a redhead

Blue bottle- A blue jelly fish shaped like a bottle

Bonza- Excellent, attractive, really great

Bunyip- a fictitious rabbit

Bush Telegraph- The local gossip network

Bush- Country

Bushed- Extremely tired

Cadge- Impose on another

Case- A crate of 24 beers

Chinwag- A chat, conversation

Chook- Chicken

Cobber- Mate, friend

Codger- Bloke, man, especially elderly and odd

Corker- Something striking or astonishing

Corroboree- Aboriginal assembly or festive gathering

Crook- Sick, ill

Damper- Campfire break cooked in the bush

Digger- Australian soldier, especially one from WWI

Ding- Dent, damaged section of car, bike, surfboard, etc.

Dinkum- True blue, real, genuine

Dirty Coathanger- Nickname for the Sydney Harbour Bridge

Drongo- Slow-witted or stupid person

Dunny- An outside toilet

Durry- Cigarettes

Ear basher- Someone who talks too much

Fair dinkum- Really genuine

Footy- Rugby league

Furphy- Rumor, false story

Gee-gees- Horses

Go- Chance or turn, "Give it a go"

Good guts- Accurate information (which could cause someone