I am studying in New Zealand and want to travel to Australia for a week or two. How to apply for a visa? Visa materials also need financial guarantees from parents or something.

To study in New Zealand, you only need to prepare your own information and go to the visa center to apply for a visa. That is to say, it is necessary to provide details of bank statements for three months. School certificate. Travel schedule, air tickets, hotels. That's usually the case. No parental guarantee. Because you have to have a bank account there, a New Zealand account will do. But my impression is that with a visa from New Zealand, I can go to Australia for a few days without a visa. You can call the Australian Embassy for consultation, or you can check the information yourself in official website. The general visa center has all the information on the Internet.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.