I live with friends (there's 6 of us in our house, good thing it's a big one)! Living with friends can be both good and bad; but my general advice with living with more than a couple of people is:
-agree on levels of cleanliness people want and sort out a compromise
-have some sort of set routine/breakdown for chores, even if it's cleaning the bathroom once a month
-compromise. You're never completely going to get what you want with 5 people, but you need to agree on things somehow.
-COMMUNICATE. No one will know you're pissed off that the bathroom is only cleaned once a month if you never say it.
Share houses tend to become the lowest common denominator in terms of what is done and how much. Find a place/people with which you can bear living for a while, try and sort out what people want, and after that, remember that we're all different and you'll hopefully only be doing it for a few years.
I get annoyed frequently about the state of the house I live in, but I've been here a year and we just signed another lease, so eh, it could be worse
As for weird people- I've lived in a few different share houses, with my share of good and bad people; yeah, you might get some weird types, but they tend to be the most interesting in my experience. You'll learn a hell of a lot living in a shared house. It's really good life experience.
Oh, and sort out money early on. If it's a uni place I presume they'll be stealing your money individually, but sort out communal stuff early, consider a weekly bills/utilities account if the uni doesn't steal that directly either. It's much better to get a big bill and know there's $250 in the bills account already and not have to wait for people to find money.