All you ever need to know about Atlanta disc golf is at discgolfatlanta.com Plenty of forums for every course so you can hook up with locals and or just get advise.
My picks are: Fly Boy Aviation, Perkerson, East Roswell, Redan, and Alexander
FlyBoy Aviation is the sickest course we have. Permission must be granted for the experience of a lifetime. It is in aviation neighborhood $5. Feldberg and Climo are there today. They were asking for some action from atlanta best last night on the forum. If you want to just get a round or two in then go to the other three courses mentioned, FlyBoy takes all day. Perkerson is TEMP on WED. only. East Roswell is tight wooded technical and was just used for the Atl Open, my home course. Redan is old school '89 but very nice with a great mix, a true Atlanta classic gem. I forgot to add Alexander in the loop. The newest addition Atl. The county spent $$ on it. Very clean. Zig zags in and out of woods to open field. Very popular for all skill levels so it can be busy.