聽講去澳洲旅行..一d農場到生活..

yes, you can apply for working holidays visa and it lasts for a year

There are jobs in farm, like cherry picking, apple picking, etc., but you should arrange the transporation yourself.  Sometimes, farms are quite remote.  And normally it works only for a few weeks in one farm and move to another.  

You will stay in the farm during your employment period, but what happens if you finish you job?  Sleeping somewhere in the road, that is my friend's experience.