This is a great question, thank you Sarah.
Each meeting (sitting) of the Senate and House of Representatives has a schedule so that the senators and members of the House of Representatives know what is going to be discussed. This schedule is called the Notice Paper.
The Senate publishes the Notice Paper for the next sitting day in advance on the Australian Parliament House website. The House of Representatives Notice Paper is published close to when the sitting day commences.
You can find lots of information about what happens in both the Senate and House of Representatives, including the Senate Daily Summary, and records of votes in the House of Representatives, on the Australian Parliament House website.