Every cent counts is what you need to remember. I know that the difference between 90cents and 95cents doesnt seem big, but it all helps. Be willing to try new brands that may be cheaper.
Your local grocer is often so much cheaper. If you can avoid it, do not buy your fresh food in Woolies or Coles. They are usually always expensive. In Canberra we have a local growers market every weekend, and it is huge. And you can save so much. However it is important to only buy what you need to buy as we sometimes go overboard because everything looks so good! Some women at work have a system where they only take a small amount of money with them so that they cannot overspend.
I will reiterate the lentils comment. Cheap and healthy at the same time.
There is also a website that I have looked at a few times, based in New Zealand (so the seasons are the same as here) http://www.destitutegourmet.com/index.php
Freeze things, dont throw them out. Take a look at what you throw out before using it (because it goes off etc) and get better at freezing things. Even if you have to cook it up and freeze it. That isa huge thing with us.
And... grow your own! If you have the space, you can grow things like corriander and other herbs that you may normally buy in the supermarket. They are so much cheaper this way. And growing from seeds is cheaper than buying a punnet.