Australia's immigration laws, as with most countries, are complex and are continually evolving. Below are some links to resources to assist you in understanding your eligibility to work in Australia.
This website will introduce you to basic information about potential visa options. The Visa Finder does not provide a complete summary of all the visas that may be available to you and makes no recommendations regarding visas that are appropriate for you; also, it provides no guarantee or assurance that you will be granted a visa, or a particular visa.
This is the official Australian Government website that provides comprehensive information on the best way to assess your eligibility to work in Australia and to understand the work landscape.
This Northern Territory government website provides information on some commonly used visa categories.