The Australia State Sponsored (Migrant) Visa allows you to migrate to Australia if you have good English skills and have skills and qualifications in an occupation in need in Australia. You should either obtain nomination from a State or be sponsored by an eligible relative living in Australia.
The Australian Recognized Skilled Graduate Visa (476) will be suitable for you if you are under 31 years of age and you are a recent graduate. This visa will allow you to gain up to 18 months of skilled work experience in Australia.
The Australian Sponsorship 457 Visa entitles you to live in Australia and work for up to four years for an employer/company who will directly sponsor you. You need to have a job offer in Oz in order to apply for this Australia work visa.
The Australian Temporary Work Short Stay Activity Visa is a temporary work visa, which will allow you to stay in Australia for up to 3 months. Under the Short Stay Activity visa you will be allowed to perform highly-specialized and non-ongoing work, you can participate in non-ongoing cultural and social activities, as long as you are not getting paid from Australia.
The Distinguished talent visa is a permanent residency visa which will give you the opportunity to live and work in Australia for good. To qualify for this visa you have to have an exceptional talent or achievements in your field. This visa would be suitable for you if you have exceptional achievements in a profession, a sport, the arts, or academia and research.
Obtaining Australian citizenship means that you are formally accepted in the Australian community. You are entitled to certain social benefits as a citizen / permanent resident - free Medicare, social welfare, free schooling.