I work for Woolworths Limited.
We look after the supermarkets but we also look after Dan Murphy's, BWS , and Caltex Petrol (There are other companies we own but we look after these). There are only a few differences between the software and hardware that they use though.
All up, there would be about 2000+ sites.

Yeah, Tafe is like a technical school, and it's no way near as expensive as university.
But since I didn't finish High School and you either need a diploma in Tafe or finish high school to get into uni, but I think everything has worked out for the better, although I could've been where I'm at sooner. Will probably apply for development in a year or more.