Dunia perkuliahan adalah level paling tinggi dalam strata pendidikan. Berbeda dengan bangku sekolah, memasuki bangku kuliah, mahasiswa harus melewat tahap lebih kompleks. Di bangku perkuliahan, mahasiswa akan didorong berpikir kritis, melakukan penelitian dan menganalisa fenomena. Dasar teori adalah hal penting dan kemampuan menemukan jawaban masuk akal harus diasah. Lalu bagaimana cara menyiapkan diri? Salah satu caranya adalah memperkuat kebiasaan membaca.

Tak salah jika disebutkan ‘buku adalah jendela dunia’. Ia membuka wawasan dan membantu kita memahami bagaimana segala hal terjadi. Dalam perkembangannya digitalisasi buku pun dilakukan. Mengikuti gerak penerapan teknologi masif dalam banyak lini kehidupan, buku kini dapat diakses tanpa bentuk fisik dalam perpustakaan online, Berikut beberapa perpustakaan digital yang membuka akses bebas bagi publik:

Perpustakaan dengan koleksi teks dan buku secara general:

1. Universal Digital Library.
2. The Perseus Digital Library
3. The Oxford Text Archive.
4. Kelvin Smith Library eBooks.
5. University of Chicago Library EOS.
6. The University of Adelaide Library e-Books.
7. Literary Resources on the Net.
8. The Internet Classics Archive. Renascence Editions.
9. The Beck Center for Electronic Collections.
10. Carrie: An Electronic Library
11. The University of Edinburgh.
12. The Library at UCD Dublin.
13. University of Oxford Bodleian Library e-Resources.
14. Bibliotheque de la Sorbonne.
15. Free University of Berlin Universitatsbibliothek.
16. Roskilde University Library.
17. Stockholm University Library.
18. University Library Ghent.
19. Open University of Catalonia.
20. University of Zurich.
21. National University of Singapore Libraries

Perpustakaan yang memajang gambar manuskrip, seni dan artefak:

1. Harvard University Library.
2. Yale University Library: Digital Collections..
3. Indiana University Digital Library Program.
4. Michigan State University Digital and Multimedia Center.
5. Columbia University Libraries Digital Collections.
6. Purdue University e-Archives.
7. Rutgers University Digital Library Projects.
8. Ohio State University Libraries Collections.
9. Syracuse University Digital Library.
10. Ohio University Libraries Digital Exhibits.
11. Brown University Library, Center for Digital Initiatives.
12. JSU Houston Cole Library Digital Collections.

Perpustakaan yang memiliki koleksi buku mengenai kebudayaan :

1. The Digital South Asia Library
2. Cambridge University Library Digital Image Collections
3. Nagoya University Library
4. University of Kyoto Library

Perpustakaan dengan koleksi buku kesehatan (medical) :

1. Welch Medical Library.
2. The University of Texas M.D. Anderson Cancer Care Center
3. Duke University Medical Center Library Online.
4. Lamar Soutter Library
5. Michigan Ear Institute Medical Library
6. South Carolina Department of Mental Health.
7. Encyclopedia of Psychology.
8. Children's Hospital Boston Interactive Features.
9. Bastyr University

Perpustakaan dengan buku tentang hukum:

1. UCLA Online Institute for Cyberspace Law and Policy.
2. Berkman Center for Internet & Society.
3. Emory Law Ready Reference
4. Santa Clara Law Library.
5. Cornell University Law School Legal Information Institute.
6. New Jersey Digital Legal Library.
7. Tarlton Law Library.
8. USC Gould School of Law.
9. Wise Law Library.
10. O'Quinn Law Library.

Perpustakaan tentang pengajaran agama:

1. Brigham Young University Digital Collections.
2. The Divinity Library, Vanderbilt University
3. University of California Library Religious Studies.
4. Flora Lamson Hewlett Library.
5. The Catholic University of America Library.
6. Ostrow Library at American Jewish University.
7. Digital Library and Museum of Buddhist Studies

Perpustakaan dengan koleksi buku penelitian akademis:

1. HighWire Press.
2. Mark Twain Project.
3. Project Euclid.
4. NARCIS.
5. The World of Dante.
6. Southwestern Writers Collection.
7. Peace and War in the 20th Century.
8. Internet Public Library.