Welcome to MN!
Lots of water here, so lots of duck hunting options. You'll get different answers from everyone on how the action is up here, for me - Last year was a great year. The wood ducks are most guys best early season action up here and these guys are correct, they can be gone pretty quick. I diver hunt about half the time, after the wood ducks are gone...
Google earth is one of my favorite tools to help me figure out spots that I'm new to. Also very helpful for deciding on your hunt location for the wind, and back up spots in case of traffic.
If you don't have a boat, check these links out for WMA's and walk in spots. Otherwise MN Lakefinder has lots of good info too, but it's geared more towards fishing.http://www.dnr.state.mn.us/maps/compass.htmlhttp://www.dnr.state.mn.us/wmas/index.html
Good luck, and welcome!