Check them out:

General Collections

• AddALL. Meta search 30+ ebook sites with one click.
• bookboon.com. Over 1000 free e-textbooks for university students, books for business professionals and travel guides in PDF format.
• Digital Book Index.
• Free E-Books.net.
• Google Book Search.
• Open Library.
• Oxford Text Archive.
• Project Gutenburg.

Free Science Books on the Internet:

• NASA Releases Free eBook About Communicating With Aliens.
• Free Physics E-books For All: Lev Landau & Evgeny Lifshitz.
• Free Databases: 170 Textbooks & UC Press.
• Free Science eBooks Database.
• A Brief Introduction to Particle Physics.
• Quantum Mechanics.

1. Library Genesis. Library Genesis is a popular search engine offering access to free articles and books on a wide variety of genres.
2. Batleby.
3. Amazon Textbooks.
4. Textbook Nova.
5. Project Gutenberg.
6. ManyBooks.Net.
7. Bottom Line.

How to Find PDF Textbooks with 10 Ways

1. Library Genesis. This website has millions of articles and PDF textbooks in its inventory where a user just has to type the name and it appears.
2. Bookboon.com.
3. Free computer books.
4. ManyBooks.
5. Free eBooks.
6. Open Textbook Library.
7. Google eBook store.

Top 20 sites to download Free eBooks

• Open Library. The Open Library has more than 1 million free e-books available.
• Internet Archive. The Internet Archive is a non-profit digital library.
• Project Gutenberg.
• Google eBookstore.
• ManyBooks.net.
• BookBoon.

Beginning on Wednesday, Amazon Prime members will get free eBooks with Prime Reading. The new program gives U.S. users unlimited access to “a rotating library of over a thousand books” and magazines, provided they use a Kindle tablet or smartphone app.

On the Amazon website, you can navigate to the Free Kindle eBooks section to find free books. You’ll find books organized into categories that you can browse through at your leisure. Many of these books are classics in the public domain, and feature similar cover art.

Your Ultimate Guide on Where to Buy Ebooks

1. Amazon Kindle. The largest online book retailer in the world, Amazon has many options for purchasing ebooks via their Kindle platform.
2. Barnes and Noble Nook Store.
3. Kobo.
4. iBooks.
5. Google Play Books.
6. Scribd.
7. Playster.
8. Bookbub.

Here are our favorite places to go for reading on the cheap.

• Borrow an ebook from your local library.
• Free eBooks for Kindle and Kobo.
• Free books on Google Play Books and Apple Books.
• Free books on Project Gutenberg.
• Kindle and Kobo Deals.
• eBook Subscription Services.

How to Get Free Books

1. Earn Free Books from MyReaderRewards.
2. Download Free Audiobooks from Libby.
3. Check Out Free Books at the Library & Through Inter-Library Loan.
4. Borrow Free Books from Friends.
5. Download Free Ebooks.
6. Check Thrift Stores, Used Book Sales, and Garage Sales.
7. Sign Up for Dolly Parton’s Imagination Station.