Hi Sarah,
As Al says, I wouldn't rush in to buying more gear for a while. Once you've got our finderscope working, one of the best things to do is just point the scope at some of the fuzzy bits you see in the sky. You won't know what they are but you'll be surprised at what you find. If you have a pair of binoculars, browse with them first and then point the scope at anything that looks a bit different.
It is however IMO well worth investing in "Atlas of the Southern Night Sky" by Steve Massey and Steve Quirk. It has maps of each constellation and a list of 5-10 things in each that are visible in small scope. It also has B&W images by the authors that give a reasonable impression of what you will see through the eyepiece.
Its about $45 from myastroshop.com.au
If you're still having problems with finding things a Telrad makes a huge difference. Even if you'r not having problems, a telrad will speed things up enormously. $79 at Bintel
www.bintelshop.com.au/welcome.htm, a bit more at myastroshop.com.au