The county extension services are always great sources of info. I even like to look at the ones from other states too.
I really like winter rye, winter wheat, clover and vetch for my winter cover crop here in Missouri. We live on a rather steep hill, and next to the house, we put in terraced area for plants and use old railroad ties with some concrete squares on the outer edge, so that we had a handy staircase to walk up and down the hill - easy access to basement kitchen that way.
I like to do that too - check out the adjoining state extension services for information, and reccomendations.
Another thing that I will do is to order trees and shrubs from growers that are 2 or 3 climates colder than mine to assure over-winter survival.