Book excerpt: Dinner parties are back. Cocktail parties are back. Cigars and martinis are back. Before you know it, even pillbox hats may be back! But some things have changed forever. There was a time when celebration meant days of planning, days of cooking, and days of recuperation. But no more! Today, the very thought of preparing one of those sumptuous multicourse extravaganzas has become no more than a fleeting nightmare. For special events, however, there is still nothing quite so welcome as a home-cooked meal. InEntertaining 101,mother and daughter Linda West Eckhardt and Katherine West DeFoyd provide all the information anyone will need to throw a terrific party at home. Each of the recipes has been tested not only by the authors but also by less experienced cooks. Each one has been simplified to eliminate all unnecessary steps. Each menu is accompanied by a carefully worked-out timetable so that every dish will be ready when it should be. And no menu requires more than an hour's preparation time in the kitchen, although some dishes may cook longer unattended--while you set the table or enjoy a cocktail with your guests. The fifty-two seasonal menus--from a Winter Solstice Formal Sage Chicken Dinner to a Summer Supper from the Farmer's Market--will allow anyone to entertain "with style and grace" every week of the year. Each menu includes wine suggestions and useful tips for serving and decorating (although the authors emphasize that there are no absolute rights or wrongs). This may not be the age of Aquarius, but it is certainly the age of liberation--in the kitchen as well as everywhere else.