Trove allows you to search for items, including digitised documents and images, held in major collections in Australia.
When searching for newspaper articles I usually use the Advanced Search screen to begin the search.
A search for information about a property named Rosemount near Neurum in Queensland produced the following item published in Queensland Country Life in November 1949.
As well as providing a copy of the article in the newspaper, Trove provides an electronically translated copy. Members of the public can register as Trove users and make any corrections to the text.
As well as articles, birth death and marriage records in newspapers can be useful.
Trove also includes access to images held in Australian collections.
Copies of the Australian Women's Weekly from 1933 to 1982 have recently been digitised and made available online on Trove. As well as doing a normal search in Trove for articles it is possible to browse issues of the magazine providing an insite into life in Australia at different times - http://trove.nla.gov.au/aww
The State Library of Victoria has also been digitising a number of publications including the proceedings of the Royal Society of Victoria, the Victorian Historical Journal and the Football Record - http://www.slv.vic.gov.au/our-collections/digitised-collections
Check other library websites for digitisation projects.