There are many different courses in psychology that span many of the attributes of man. All courses in psychology relate to each other in several ways. Some psychology courses may have one or more prerequisites. The same concepts may appear in several courses but in different formats. Understanding in most substantive courses can be helped by taking methodological courses.
Psychology is called a social science but our methods of investigation are rigorous.
Most psychology courses are useful with any college major. Courses from mathematics, biology, chemistry, sociology and many other departments are useful in understanding psychology. Most psychology teachers are willing to explore with you any of the concepts and fields of psychology and the relationships with other majors. Yes there were geniuses and substance and methods and tools before computers were invented. However, computers are certainly one of the most magnificent tools of all times.