A library is organized for use and maintained by a public institution, corporation, or a private individual (Wikipedia). Dating back to 1900 BC, during ancient Egyptian times up to the millennium, librarians have been an influential part of a society's educational growth. Though libraries over time have changed and improved their efficacy, there has been even more of an evolution since the advent of computers and the Internet. The Internet's unforgiving speed is forcing changes in a profession that dates back millennia. Some librarians, after all, make it look easy to adapt. Let's take a look at how librarians' mediums will continue to evolve.
Just in the past 20 years, libraries have relinquished the Dewey Decimal System, scores of printed encyclopedias, microfiche, CDs, cassettes, videotapes, and manual cataloging. Today, these once popular library items have been replaced by DVDs, educational video games, e-books, audio books, podcasts, and electronically filed information. Much of a libary's content is still in print format - but you will also see duplication on the internet as well.
The role of a librarian still holds consistent, serving as the intermediary between you and the information you are seeking. They will be able to not only peruse through multiple databases and materials, making them a great resource as a college student.
Modern libraries are increasingly being redefined as places to get unrestricted access to information in many formats and from many sources. Services are extending beyond the physical walls of a building, by providing material accessible by electronic means, and by providing the assistance of librarians in navigating and analyzing tremendous amounts of information with a variety of digital tools. This is good news for online college students, as you may have access to these rich channels of online information through your online school.