A good place to start is http://www.immi.gov.au/
It's easy if you're from the UK, you can come here for a working holiday visa, when that comes close to running out, what you do is get your salary managed by a management company, they take care of your salary and visa sponsorship till you find an aussie woman to marry and get a permanent resident visa. A know a lot of I.T dudes (being one myself) that do this, and they keep their visa as long as they keep working.