The dark web can be an incredible smorgasbord of knowledge, services and individuals. Although of those links are legitimate, others set it ablaze into criminality. That’s why you must use Tor and a VPN when browsing the world wide web, especially for the dark web.

CIA Shop
The CIA has their own store for the dark web where they feature anything from job listings to archival data like the World Factbook. You can access this website by using the Tor browser, which encrypts your traffic and erases your browsing history after each session.

Comic Library
For fans of Marvel and DC, there’s a large assortment of downloadable comics for the dark web due to this onion domain. Be sure that you read the disclaimer carefully and know your rights before downloading anything from the dark web.

Tunnels
This onion domain boasts one of the primary digital libraries on the dark web, with more than 500,000 books and articles downloadable. Be cautious, however, because this onion site contains material that violates trademark.

Dread
This is the Reddit of the dark web, a forum where one can inquire and take part in discussions without revealing your identity. It is just a good place to obtain your bearings for the dark web and learn a little more about its unfiltered and often controversial content.
If you want scientific papers, look at Sci-Hub, which allegedly holds the largest repository of such documents about the dark web. It’s a wise idea to use a virtual private network when visiting this great site though, as quite a few users have reported malware and redirects.
For more details about dark web links check this resource