Good morning Yenko.
Visit this page: ATF Online - Firearms - How To - Become An FFL
. It will answer some of your questions, and will lead you to where the rest of them can be answered.
You're in luck too, there is a field office in Atlanta. Here is their contact information.
Bureau of Alcohol, Tobacco, Firearms and Explosives
Atlanta Field Division
2600 Century Parkway, Suite 300
Atlanta, Georgia 30345 USA
Voice (404) 417-2600
Fax (404) 417-2601
Good luck, and let us know how it goes.