Library management major is not unpopular. After graduation, you can work in a library or publishing house, or you can enter an enterprise, but you need a file management module. Library management majors prefer interdisciplinary graduate students because all kinds of knowledge are conducive to professional development. There should be three reference books for postgraduate entrance examination. As long as you are interested in your major and willing to work hard, it is not too late to review, but it is best to find students or teachers who apply for the school and find some reference materials. I wish you success!