Choosing a bottle of wine should be fun, not frightening. After all, one of the most important elements of enjoying wine is not so much the vintage or the vineyard but the occasion on which it is enjoyed. In their new book, Wine for Every Day and Every Occasion, Dorothy J. Gaiter and John Brecher, authors of the popular weekly "Tastings" column in the Wall Street Journal, give you the kind of honest, accessible wine information that is hard...