LLC For sole ownership
When you register an LLC with one owner, the IRS will by default classify the business as a disregarded entity/sole-proprietorship. You would need to have the company registered with the state, and obtain a federal EIN for the business. (It is also highly suggested to get an Operating Agreement as well). You can click here to learn more about how to register an LLC in Georgia.
Please keep in mind, if you would be selling products, or purchasing any supplies in wholesale, you would also need to apply for a Georgia state sales/use tax, also commonly referred to as a reseller's permit. You will see this option under the state and federal licensing section of the application.