The Online Study Guide contains exercises, Web links, chapter summaries, and self-study quizzes to help you understand the contents of the text and study for exams.   Text updates contains updates to review questions and problems, material in the text, additional readings, and learning modules that probe deeper into specific topics in the text.   Additional Topics contains bonus learning modules covering topics that are constantly changing in e-business.       New Developments contains statistics on Internet usage and e-commerce, commentaries on current trends, and news media articles covering emerging trends and issues.