Here are two Australian mental health websites that might help:
This is an interactive website that teaches people to use ways of thinking that will help to prevent depression. It is based on CBT (Cognitive Behavioral Therapy).
This site has three sections: self-help, support for professionals and research. It includes a depression quiz, information about effective treatments, suggestions for planning activities and problem solving, a list of pleasant activities, and cognitive behavior therapy materials and links. The downloadable fact sheets on depression are particularly useful
See also ‘This Way Up’ a self-help course available on mobile devices.
Hope this was helpful for you. A lot of good work on mental health has come out in Australia recently.