Book excerpt: The Study Guide to accompany Organic Chemistry, 12th Edition contains review materials, practice problems and exercises to enhance mastery of the material in Organic Chemistry, 12th Edition. In the Study Guide to accompany Organic Chemistry, 12th Edition, special attention is paid towards helping students learn how to put the various pieces of organic chemistry together in order to solve problems. The Study Guide helps clarify to students what organic chemistry is and how it works so that students can master the theory and practice of organic chemistry. The Study Guide emphasizes an understanding of how different molecules react together to create products and the relationship between structure and reactivity.