You can search for the textbooks + dictionaries, etc for your courses at:
Code:
http://www.bookshop.unsw.edu.au/textlist.html
However, it's better to wait for your first lecture, in which the professor will advise you upon the texts needed. It's a waste of money to buy all the textbooks at once, because some may be used only for this semester...lol, when I went to the unsw bookshop today, I saw people virtually buying off the books from their booklist, totalling almost 600 dollars at the end.