Work and Holliday (WHV 462 visa) can be lodged with an online application, if you are applying for your first Work and Holiday visa you have to be outside Australia to apply. If you are currently holding a Work and Holiday visa, you are allowed to apply for your second visa onshore.
Before you apply, make sure you check if applications are still open from your country of passport.
You also have to provide evidence you have enough funds to support your stay in Australia. You must provide evidence you have enough money to purchase a ticket to leave Australia at the end of your visa, or that you have already booked the ticket.
If you are applying in Australia, you don’t need to provide evidence. If you are applying outside Australia and don’t attach evidence to your application, processing may take longer as the immigration need contact you to request further information.