Moving towards more precise content, Sci-Hub is a great resource for science focused articles, peer reviewed journals, and anything science related you may be searching for.

Lots of professors and librarians tend to recommend Project Gutenberg since it is the oldest digital library. Not every book is on this site, but it’s a great resource for older texts and easy download. Everything on this site is distributed with permission. This site is a really well known source for books that have been released under United States copyright law and fallen under public domain. Now, a lot of newer, popular reads are usually on this site. This site was originally created on the basis of being a shadow library for peer-reviewed journals, but it’s content eventually expanded to several other areas. Z-Library, or zlib, is a great source for books and scholarly articles. It has easy download options and tends to be a top choice for most people seeking online books from Reddit. It’s one of the larger online library websites and usually will have what you’re looking for. Library Genesis, also known as LibGen and Genesis Library, is the classic Reddit recommendation to find textbooks, articles, journals, books, images, magazines, comics, general-interest books, you name it, online. Here are the top 15 recommended textbook resources on Reddit. If you opt to find an ebook, Reddit has several threads dedicated to providing free textbook resources. This may be by buying from another student, renting from your bookstore or Amazon, or seeking an electronic version. There are several ways to try to reduce the cost of textbooks. On top of books, you often need access codes, software, and course specific materials. Paying for textbooks in college can add up to a huge expense. Top 15 Free Textbook Resources According to Reddit

Websites like zlibrary