There are a lot of passarines and parrots in Australia. The small, brown birds look rather confusing!
I had to choose a field guide, so I got the Field Guide to the Birds of Australia by Simpson and Day. I have been getting this guide out from the library for years, so I'm already familiar with it. (I'll do a review on it later)
So far I've chosen several places to go including Mary Cairncross scenic reserve, Noosa Bird trail, Lake Baroon, and Oxley Creek Common. I also have two target species so far, White-bellied Sea-eagle and Wompoo Fruit-Dove. They are relatively common species so they should not be to hard to get.