If you want to holiday or visit family in Australia, unless you are a New Zealand citizen, you will need to obtain an Australian visa before you travel. The type of visa you will need broadly depends on what you intend to do in Australia, your nationality and the length of time you want to stay in Australia, but you will probably need either an Electronic Travel Authority (Visitor) or a Tourist visa or a Sponsored Family Visitor visa. Whichever the case, you should apply for the full period of time that you want to remain in Australia, because once there, it is possible that you will be unable to extend your visa.
The Electronic Travel Authority (ETA) (Visitor) is just as it sounds – electronic and therefore you may not get a stamp or label in your passport but don’t worry, the Australian immigration officers will have a record of your visa.
You can apply for an ETA (Visitor) if you wish to stay for less than three months, if you are outside Australia and hold a passport from one of the 34 eligible countries. You will find a full list of these on the Australian Government Department of Immigration and Multicultural Affairs website, but included...