For those doing Australian or Tasmania research, you might be interested in Trove for digital copies of newspapers, Government Gazettes, maps, magazines and newsletters from the National Library of Australia. Also make sure you check out the Family History section of the National Library for their collections.
Don’t forget the National Archives of Australia – they might have something to help you with your research.
Tasmania State Library – Explore the Collections you will find links to the many excellent collections. Click on each collection to see what is held within it.