Hiya,
It's all quite complicated, i can tell you what we have to do.
My hubby is a motor mechanic and is on the occupation in demand list, so we are able to go over to Oz on the 'general skilled' application. Before you can apply on this application you have to have your skills assessed, for us it was Trade Recognition Australia.
We got all our info from
www.immi.gov.au which is the official site.
My sister was in a similar situation, she used a migration agent, i can't tell you the number of times i have had to ask her for help.
Best is to have a look on the website and then see if you need an agent....
We have paid $300 TRA, $1990 for application and then there are medicals which i believe to cost quite a lot aswell.
Hope this helps, there are other visas, which i nothing about!!!!!!!!!
Rache76