Sign up for snowmobile safety classes. See DNR website:

http://www.dnr.wi.gov/org/es/enforcement/safety/snowed.html

http://www.danecountycouncilsnowmobileclubs.com/

http://www.awsc.org/

http://dnr.wi.gov/org/caer/cs/Registrations/snow.htm

http://www.dnr.wi.gov/org/es/enforcement/safety/snowed.html