The main purpose of a university library is to collect a large quantity of scholarly material from different decades and on diverse topics to make your research easier. Those materials might be printed on microfilm, video, CDs, or even offered on the Web. Library resources go through a review process.
Librarians select books, magazines, journals, databases and even Web sites.
This selection process allows the library to collect sources considered reliable, historically relevant, and valuable. Library resources are free or discounted for your use. Though the items libraries purchase are not cheap, they are able to purchase one copy which can be shared by many people. Library resources are organized. Items in libraries are organized so you can easily find all the sources on a topic.