linmei,
I'm going to apply for a 3 year visa, and am going to apply for an extra "reading year", making 4 total. I can only work 15 hours per week because i'm a student. My wife will have a work visa however and can work full-time. I haven't applied for my visa yet, I gotta get on that this week. In terms of the University, they haven't been much help at all. Its basically figure things out yourself. I'm waiting to hear about studentships also, so who knows.