Hi there! Years ago I got a shade garden "kit" from Gurney's...most of the things in there were bare root....hosta, bleeding hearts, ferns, etc.
The roots that you get will probably be in bags with maybe some saw dust. Just follow the directions on the bags. They aren't hard. Keep in mind that it'll take until at least next year for your plants to get nice and full. ...at least that is how mine went.
As for voles, We just find their hole and put the hose into it and flood out the nest to kill any babies.