Organic chemistry can overwhelm students and force them to fall back on memorisation. But once they understand how to use mechanisms, they can solve just about any problem. With an organisation by mechanism, students will understand more, and memorise less. The Second Edition of this groundbreaking text provides a fresh, but proven approach to get students confident using mechanisms. Smartwork5 online homework supports learning by mirroring the text's organisation and pedagogy. Students use an intuitive drawing tool while receiving instant hints and answer-specific feedback, making practice more productive.