This suite of linear teaching programmes in areas of basic organic Chemistry was developed for use by first year undergraduates at Sussex University where it has proved extremely popular. The concepts treated in the seven programmes are fundamental to any introductory course in Organic Chemistry and include certain intellectual techniques such as "curly arrows" which students often find difficult, but which need to be fully mastered. The programmes are built up from frames. Each frame tells something about the concept and usually includes a question to help readers find out whether or not they have understood the point. The correct solution is given in the next frame so that students can check at once that they have grasped the point or go back over it again. There is no time limit on the exercise, so students may proceed at their own pace on their own. The 5xercises are self-contained. With tutorial time increasingly short, this self-study text should prove invaluable to students of Chemistry, Biology or pre-clinical Medicine taking a first course in organic Chemistry and their lecturers.