There is more on this topic, here.
1. Make Your Vote Count
An easy guide on how to vote. This has been written Monica Smit, Reignite Democracy Australia.
2. How to Vote
A short video by Monica Smit, explaining the voting process.
▹ How to Vote
3. Put the Majors Last
This is the website that Monica refers to, in her video.
There are benefits to using this site. You can check out the candidates in your electorate, place them in the order you want, and create your own How-to-Vote card. Clearly, the goal of the site is to have the three major parties (Liberals/Nationals, Labor and The Greens) take the last three spots on your ballot paper.
However, I think there are exceptions:
a. What happens if your sitting MP has been a good representative, and has worked hard for the electorate? Do you still mark them last?
b. If you have in your electorate, a Climate 200 Independent, this candidate needs to go to the bottom of the list. But the site only allow the three majors to take the last three spots.
In these cases, use the site as a guide, then make the changes you prefer.
4. Marking Implement
Pencil or Pen? The video above, suggests a pen.
We had the same suggestion by Nelson, here.
The AEC explains the options, under its FAQ section.
5. Your Ballot Papers
From the Reignite Democracy Australia website, here are the Sample Ballot papers.
▹ House of Representatives (Lower House)
▹ Senate (Upper House)