I've been before. I personally think that tandem is the way to go for your first time. If you do aff, then you'll have to keep focused on what you are supposed to do next instead of just enjoying the experience.
If you do go, I recommend Skydive the Farm in Rockmart. My mom and sister have been jumping out there for quite awhile. (My mom is over 110 jumps) The other place out there is kind of sketchy.