Start by looking at WMU's list of undergraduate majors. It might help to print a copy and cross off majors that are not possibilities. However, be sure to look up unfamiliar majors; they might turn out to be of interest.
Look up majors of interest on the WMU undergraduate catalog. In the catalog, choose "Programs" from the drop-down menu and then enter a keyword (name of the major, vocation, etc.). An alphabetical list of search results will appear; scroll through to find the desired major.
Take general education classes in areas of interest (check with an advisor to make sure it is a good choice).
Meet with an academic advisor that specializes in the major of interest.
What can you do with your major?
Get more information on the relationship between a potential major and careers in the Occupational Outlook Handbook. Enter a major or career or interest and learn about the average salaries, working conditions and related occupations associated with that field.