If you have received a mail in ballot, fill it out and mail it back! Mail in ballots must be postmarked by November 5th. Your ballot can also be dropped off at the Provo Rec Center, Orem City Hall, the Scout Offices in Orem, or a few other locations around the county on election day. For a full list, check out this site –
http://www.utahcounty.gov/Dept/clerkaud/Elections/Absentee.asp
The Provo Rec Center location will also be open to drop off your ballot or vote in person from October 30- November 2 from noon to 5 PM.
If you have not registered yet, you can still do it in time to vote. Visit https://secure.utah.gov/voterreg/index.html and register online by October 30th, and visit one of the in person voting locations on Election Day, November 6th.
This year Utah is even allowing same day registration. If you wait until election day to register, make sure you bring ID(which does not need to be from Utah) and proof of address with you when you go to vote.
You can double check what will be on your ballot, see candidate profiles and arguments for and against the ballot propositions by visiting vote.utah.gov