I use a program called Google Hangouts. It's super easy to use. All you need is a Gmail account and it's free to access. The program is super fast and works great on a laptop, PC, Mac or hand-held device or phone. One of my students uses her iPad when the weather is too difficult for travel.
I know a bit about Australia, but next to nothing about NSW. I learned that it is a state on the east coast of Australia. It borders Queensland to the north, Victoria to the south, and South Australia to the west. Its coast borders the Tasman Sea to the east. The Australian Capital Territory is an enclave within the state. New South Wales' state capital is Sydney, which is also Australia's most populous city. When I learned this I was a bit shocked he couldn't find a mandolin teacher in the largest city in the country! But then after a couple email exchanges I learned he's not actually in Sydney, he's about 600 kilometers away, hence the challenge!
Going to be fun.