Reference Services Libraries also have reference services which help library users find answers to factual questions and locate particular materials. Related to this is the function of helping library users learn to better use the library's resources. This is done either in the process of helping the user find material or through tours or special classes on using the library. Particularly at the beginning of the school year or the semester, the library has many tours to show users what is available and how to use the resources. This is very useful for new students.
Most libraries have interlibrary loan services.
If a particular book is not available in the university's libraries, the interlibrary loan service may be able to borrow the book from another library. If an article in a periodical is not available, a library that has the journal will photocopy the article. This service is usually free for students. In addition to the interlibrary loan services, some university libraries are connected to other libraries in the same area or region. Their computerized catalogues are connected, and students can freely borrow books from the library of any university that belongs to the group.