If you are going to go into HRM, you must have some interests related to it. The important thing for you to do is use a word search in a database of articles and spend an afternoon reading research articles written by other HRM professionals. See what is happening in the field. One important phenomenon in recent years is managing change and managing diversification, internationalization, and so forth. Much has been written about the way to mitigate problems associated with change.
Try qustia or Google Scholar to see what other scholars are writing. After that, spend some time reading about different kinds of research design. Google: quantitative qualitative research methods.
Kevin, EssayForum.com