Lifehacker.com recently wrote a great article describing what a hackerspace is and why you should join one:
Did you know that we had (or will very soon have) four different hacker/makerspaces around Atlanta? They all have different emphases, but making is still at their core:
They will all be present at the Faire this year so you’ll be able to get to know all of them and figure out where your interests might fit in best. The Atlanta area spaces will also be joined at the Faire by a number of other spaces around the Southeast:
So be sure to check them all out to see what these Maker communities have created!