The type of Visitor Visa Subclass 600, that you must apply for depends upon your purpose of visiting Australia, the period for which you intend to stay there and the country of your passport.
The visitor visa subclass 600 does not allow the applicant to work in Australia while under this visa. If you want to study in Australia with this visa, you can only study courses to the maximum of 3 months.
The Tourist Visa 600 allows the applicant with a stay period of maximum 12 months in Australia.
You must have genuine intention to only visit Australia, have sufficient fund for your stay and have adequate Health insurance for your duration of stay.