Casual clothes for a guy not very much into fashion?

I was wondering if some of you could suggest some clothes, maybe an entire outfit, that would look good on me? I'm an 18 year old male, and I don't care very much for fashion trends, and I really dislike things like chinos and woolly cardigans that a lot of guys seem to be wearing nowadays. I prefer to wear tracksuit bottoms when I'm lying about the house or just hanging out in one of my friend's house, and I usually just throw on a pair of jeans if I'm going out somewhere. Can anybody help suggest something that might look good on me, but doesn't fall under the things I said I don't like? Thanks.