Tracy, simplistically, you just open the play window as normal, then look under "Tournaments," and you'll see a "Country Club Tournaments" option now. When you click there, you'll see a variety of free tourneys as well as tourneys that cost some credits (where we split the pot).
On this site under the WGT Community option > Country Clubs > The Country Club of Atlanta, you can also challenge other members, post to our club forum -- where we talk about the game AND stuff other than golf -- and much more.
Have fun,
Jay