I mean, they might as well have some use. If you don't want to talk to them, you can always talk to your personal tutor. It is important to build some kind of a relationship with your personal tutor, because that is the person to go to first if things start to go wrong. They can be a first line of defence or attack, so get to know them. I don't mean invite them home to meet your parents, but go and see them at least once or twice a term, just so they know you exist.
Organisation is very important.
Turning up for class is very important. And tutorials are a really good way to get to know your classmates. You find out very quickly who the clowns, the spongers and the dossers are. I am not the world's most organised person, but I would say you should file everything properly from the word go. Have a separate file for each subject and keep lecture and corresponding tutorial notes together.