Yeah I hear ya I'm stupid with tax in my own country as well. and I was never good at math so it's never a good combo..This site has some good info on jobs and tax
(click where it says Aus-Guide)
some more info
I have been to: Myanmar, Laos, Cambodia, Thailand, Vietnam, Singapore, New Zealand , Australia, Fiji, Costa Rica, United States, England, Ireland, Wales, Northern Ireland, Scotland , France, Italy, Switzerland, Germany, Austria, Vatican, Guatemala, Belize, Honduras, Nicaragua, El Salvador, Panama, Colombia, Mexico, India, Nepal.
Where to Next? Iceland!