-work on your leg endurance and cardio
-make sure to know where your lecture and tutorial locations are during O-week or before so that you won't have to crowd around the maps like other first years when sem starts
-look for your books on textbookexchange first before going to the bookshop,
http://www.textbookexchange.com.au/content.php/25.html
-buy your labcoat and other stuff if you're doing chem or bio.
-read this-
http://www.arc.unsw.edu.au/media/25774/cheapskates-2010-v2.pdf
-go to bus stand C (or maybe it's A, I don't remember) outside NIDA on ANZAC Parade for the 891 (or is it 895?) express bus to Central. You'll know what I am talking about when you see a 50-100m long line along a bus stand. Buses don't come as regularly as on bus stand C (or A if I'm wrong) on the two other bus stands along ANZAC Parade. There is also another express bus to Central down at High Street near the Med building, but these buses only do their thing after 3pm, I think (I don't usually catch these buses though, so I may be wrong about the times. Someone else will clear it up).