University of Tasmania currently have a Certificate and Diploma in Sustainable Living available with a HECS waiver - meaning that if you are eligible for a Commonwealth Supported Place you can enroll and they will waive the student contribution. The courses are fully online with no fixed times you need to be available, so are quite flexible to fit around other commitments.
Many of the courses are practical and the assignements relate you your own situation and local area. I am just finishing the Science of Gardening subjects, which has deepened my understanding of how plants grow and the interactions between different organisms in the garden. The assignments have included things like assessing the soil in my garden, and the final assignment is pulling together everything to create a comprehensive design plan for my own garden.
There are also subjects on sustainable housing and biodiversity, if you are interested in doing some study I highly recommend looking into this.
