Typically you can purchase car insurance with only a learner's permit but the insurance company might require you to have a fully licensed driver over a certain age on the policy with you.

Depending upon your current age, the insurance company might also request you to obtain a full driver's license within 30 days of the inception date of your insurance policy.

If you are a minor than a parent or guardian will need to sign on the insurance policy contract with you since minors cannot usually enter into legally binding contracts on their own.

To see if Georgia has specific guidelines regarding a person with a learner's permit obtaining insurance you can contact the Georgia Insurance Commissioner.