For AKC titles...find an obedience club or a kennel club and start training with them. You will be taught how to handle your dog in the ring in order to not lose points towards titles. You will also probably end up with a pretty obedient dog. Most kennel/obedience clubs put on a show at least once a year, you can start off there and learn the basics. Once you get into it its pretty easy to figure out the rest as you move up levels and such.
Schutzhund...same thing. Go to a club, join the club, you'll figure everything out during training.
Shows (German and AKC) are a bit different. You really need to get into the show world first before you start showing a dog. Based on the pedigree of your dog, you'll run into many road blocks in both rings. They are highly political, and highly competitive. Learning the tricks of the trade in that world takes many years and thousands of dollars.
AKC has a website with a listing of their titles and what they mean. I'm sure the same is true for Schutzhund titles.
Last edited by martemchik; 10-29-2012 at 10:26 AM.