In Georgia, early voting is a privilege for all registered voters in the state, and doing so only requires finding an early-voting polling location. A resident must also have an approved form of identification when going to vote.
Georgia also offers the option to mail in a ballot, with the deadline varying based on the election. This ballot is obtained through the Georgia secretary of state's office.
Of course, it is important to check registration status before showing up at the polls. On the secretary of state's website, one can find a directory of phone numbers for local election offices, which have records of who is registered and who is not. Alternatively, a "My Voter Page" provides the same information along with personalized sample ballots and a list of the early-voting polling locations. Since most municipalities only open select sites for this occasion, they may differ from normal polling place for most voters. These locations open up as early as 21 days before the election.
Make sure to bring an appropriate form of identification when going to one of these polling locations. A Georgia driver's license, even if expired, works just fine. Otherwise, either a state-issued voter ID card, valid U.S. passport or valid military photo ID will suffice.