This guide to college major fields of study informs users about the array of undergraduate majors and common features of those majors. Following a discussion of how to use the book and essays by actual college students on how they chose a major, the guide describes 151 majors grouped in the following 17 categories: agriculture; architecture and design; the arts; biological and life sciences; business and management; communications; computer and information sciences; education; engineering; health sciences and services; home economics; humanities; interdisciplinary, area, and ethnic studies; mathematics; physical sciences; social and behavioral sciences; and theology. The introduction to each category provides an overview of each field and describes differences between the various majors. Each specific description covers nine topics: interests, skills, and qualities associated with success in the major; recommended high school preparation; typical courses in the major; what the major is like; specialization; other majors to consider; and careers related to the major. Included are a career index listing over 150 jobs and some of the majors that prepare for those jobs, and a related majors index showing the range of majors related to a specific field. Also included is an alphabetical list of majors. (JB)