FamilySearch.org is a wonderful resource. The LDS have microfilmed so many courthouse records and many have become available to use online. There was a courthouse fire recently in Georgia and fortunately the old records had been microfilmed. The newer records were not but I hope the court had digitized them and saved them on servers somewhere. But if you go to their site, log in (you must register but it is FREE), click on the SEARCH tab and choose Catalog and type in your county or city where you want to research. Some records are online but some are only viewable at one of the research/stake libraries or at an affiliate library (my neighborhood library is an affilate).
If you're so inclined, you can transcribe sets of records so that they become indexed.