How can I borrow books remotely?

I’m moving from Sydney to Hervey Bay (I have no job and I can’t afford to stay in Sydney, so I’m moving with my parents, yay), and while there’s a local library, it doesn’t have the best collection, and the books I want aren’t listed. I don’t really want to buy too many more books, since I’m taking a truck load with me and my parents might kill me if they see me buying more books, so I want to borrow. Is there a way I can borrow books remotely via post? I’m a member of the State Library of NSW and a university alumni, so I’m hoping there’s some way I can borrow from large institutions…