Janani

Hi, I hope to arrive Ausralia under the student dependand visa.May I know the required documents?Also can I apply for the visa online through my husbands' immi account. Further I want to know whether that my husband hold a single OSHC so do I need to covert it as a dual OSHC or can I take a single OSHC.Because upgrading single one to dual is quiet expensive for me. Thanks.