There is a catch, though. To use the Kindle library, students need to own the namesake e-reader. They also need to subscribe to Amazon Prime, which is $39 per year for college students.
Students may find PDFs of textbooks posted online, too, but downloading those copies can get them into murky copyright waters. And even so, searches may bear little fruit.
Despite the outlets available, many students won't find all of the texts they need, financial aid expert Kantrowitz told U.S. News via email.
"Generally, you won't be able to find many free textbooks except for classic literature."
Trying to fund your education? Get tips and more in the U.S. News Paying for College center.