The following link is to the MN Secretary of State website. That's the MN state office responsible for conducting the election.
It will tell you everything you need to know about voting on Election Day.
Where to vote (that is, where your polling place is), and what districts you are in for the Congressional elections, MN Senate, MN House, County Commissioner, Judicial, and other districts.
You can get a map to your polling place, get a list of the candidates that you can vote on, and actually see a sample ballot (you will need Adobe Reader for the sample ballot) ahead of time.
Click here https://pollfinder.sos.state.mn.us/ for the Polling Place Finder, which will give you all of the information listed above.