Here is the perfect little book for anyone--teenage or otherwise--who has ever wanted to master the art of good table manners. Written by Walter Hoving, former chairman of Tiffanys of New York, it is a step-by-step introduction to all the basics, from the moment the meal begins (It is customary for the young man to help the young lady on his right to be seated) to the time it ends (Remember that a dinner party is not a funeral, nor has your hostess invited you because she thinks you are in dire need of food. Youre there to be entertaining). In addition to the essentials about silverware, service, and sociability, it includes many of the fine points, too--the correct way to hold a fish fork,