This manual satisfies two needs for students and teachers using The Art of Electronics as a text: * It sets forth 23 laboratory exercises that can form the backbone of a one- or two-semester course in electronics, both analog and digital * It supplements the text's explanations of selected topics which have been chosen for their importance to a student, rather than a practitioner who uses the text as a reference. The manual is a product of many years' teaching at Harvard University, where the authors have tested and refined both lab exercises and explanations. The result is a set of course materials tailored to students' needs, moving quickly where appropriate and slowly on those concepts that students have found most difficult.