Can I live in Australia as a US citizen?

As a US citizen, I'm wondering if it's possible for me to live in Australia. What are the main requirements I need to fulfill in order to make this happen? Do I need to apply for a specific visa, and if so, which one? Additionally, are there any financial considerations I should be aware of before making the move, such as tax implications or currency exchange rates? I'd appreciate any guidance or insight you can provide on this matter.