I think the first step is to clear IELTS academic with 7 points in each section.
once you source verification is done, please apply to your relevant specialist college.the list is available on Medical board of Australia website
once you send your documentation to the relevant assessing authority specialist college, you will be invited for an interview that happens in Australia. It is advisable to sort out your visa in the meantime.if you do not have PR, things are a little difficult.
post your interview you will be adjudged “Partially Comparable” (Most doctors from Subcontinent are given this only).
you then need to find clinical rotations in recognized hospitals and then over a period of 1 or 2 years, you will be given specialist registration to work freely in OZ.
hope this helps. In case you need any other assistance, please do let me know.