My husband is an Australian citizen. What information do I need to apply for Australian citizenship?

You can't apply for Australian citizenship directly.

For example, to become an Australian citizen, you must first become a permanent resident of Australia and live in Australia for a long time before you can apply for naturalization.

Your husband is an Australian citizen. You can apply for a partner visa first and then go to Australia. After two years, as long as you can submit an application for permanent residence. The application period will be relatively long, which may be as fast as 1 month, as long as half a year and as long as half a year. Immigration should investigate the authenticity of marriage, and if there are children, they will come down soon.

Naturalization requires you to live in Australia for four years with a legal visa within five years, one of which must be after holding a permanent resident visa.

That is to say, you have lived in Australia on a partner visa for two years, and then you can apply for the naturalization test almost two years later.