There are several types of Australian visas that would allow you entry to the country. For short-term visits, your best option would either be an Australian ETA visa, eVisitors visa or a visitor/tourist visa.
ETA is short for Electronic Travel Authority, it is the easiest to acquire compared to any other Australian visa for travel. The application is fairly simple and can be done online. For eligible visa holders, there is no need to visit consulates or go through long lines. It lets you spend up to three months in Australia.
An Australian Tourist Visa, on the other hand, can let you stay up to three, six or twelve months. The Tourist visa can be lodged online, within Australia or outside of the country...More