To become a notary public in Minnesota, apply to:
Minnesota Office of the Secretary of State
180 State Office Building
100 Martin Luther King Boulevard
St. Paul MN 55155

They will issue you a Notary Commission card that must be registered in the County where you reside.

When you register you will need:
1.      Your Notary Commission card
2.      $100 payable to the Cottonwood County Recorder
3.      Photo ID

Click on the link to the Office of the Minnesota Secretary of State for more information.