As far as copy editing training goes, it's usually the slot's responsibility to coach new editors. Most work five days a week and have set schedules. Normal hours are 4 p.m. to midnight. There is a lot of flexibility on the Night GA team, and I think in the newsroom in general. Some people work part-time, and personal issues and child care needs are taken into account.
Extra pages are okay.
Star Tribune copy editors are encouraged to branch out.