To vote in national elections, voters must be U.S. citizens—but don't forget that each state also has its own set of registration guidelines. ASHA's Take Action site provides an online voter registration form for all states that allow it. You can also visit the United States Elections Assistance Commission (EAC) webpage.
If you have registered to vote, but won't be able to get to your polling place on November 8, you can get information about obtaining an absentee ballot online.
The National Campus Voter Registration Project's "Your Vote, Your Voice 2016" campaign, supported by the Washington Higher Education Secretariat, aims to enhance civic engagement and political participation from college students.
The United States Elections Assistance Commission (EAC) is a an independent, bipartisan commission. It is a great resource for information on polling place accessibility, voter assistance provisions for making polling places accessible, and provisions for assisting such voters.