Uni sounds really scary
I know!! I'm terrified. Not so much the academic side, but more how to conduct yourself in academic and social situations. And what kinds of standards and formats you're expected to maintain.
Just be yourself at uni. In social situations try to be out going and in academic situations 'DO NOT' question something they have said that seems to challenge them, my friend did this and had an epic fail. Also in tutes don't answer questions all the time, but make sure you contribute so you actually get something out of a tutorial.
Actually, on a very superficial point: if someone could weigh in on the dress code, that would be awesome. I'm assuming it's just casual, not smart-casual (whatever that means). But I need info, info!
Go in what ever you want to. But please DO NOT come in a suite as you look pretentious. On hot summer days I will go in a T-Shirt and shorts, normal days t-shirt or long sleave shirt and jeans and in winter I will wear a jacket, long sleave shirt and jeans.
But my friend is trying to make a trend where on a particular day, once every year he comes in a suit (He is doing Actuarial studies) and I'll find out the day and come in a suit. Mind you he had a lot of people looking at him weirdly, but it should still be fun.
Mind you I have seen people wearing the Mexican sombreros and all the other Mexican attire come into my programming lecture to sing "the Mexican dance" during prosh week.