Book excerpt: A candid and indispensable primer on all aspects of advertising from the man Time has called "the most sought after wizard in the business." Told with brutal candor and prodigal generosity, David Ogilvy reveals: • How to get a job in advertising • How to choose an agency for your product • The secrets behind advertising that works • How to write successful copy—and get people to read it • Eighteen miracles of research • What advertising can do for charities And much, much more.