Here are some helpful links for preparing to vote:

http://www.ncsl.org/research/elections-and-campaigns/absentee-and-early-voting.aspx
https://www.vote.org/polling-place-locator/
http://www.ncsl.org/research/elections-and-campaigns/absentee-and-early-voting.aspx
https://ballotpedia.org/Same-day_voter_registration
https://www.nonprofitvote.org/voting-in-your-state/voter-registration-deadlines/