E-book or electronic book is a digital publication just like a complete physical book with text and images. There are electronic versions of printed books also available on internet. E-books are available in many different formats, but most of them are available in PDF format. Some of the most popular e-book formats are PDF, TXT, RTF, HTML, EPUB, DOC, BBeB, AZW, non-DRM MOBI and PRC. Different e-book readers support different formats. The PDF format is supported by almost all e-book readers. PUB format is also widely supported.
Although you can read e-books from your PC and most of the smartphones, there are many different dedicated e-book readers are available in the market where Amazon Kindle is the market leader. Here is the list of most popular e-book readers.
- Amazon Kindle, Kindle Fire (colour), Kindle Touch, Kindle Touch 3G
- Nook Simple Touch, Nook Tablet
- Apple iPad
- Sony Reader PRS-350, PRS-650, PRS-950
- Kobo eReader, Kobo Touch, Kobo Arc.
Kindle Cloud Reader is a web application that allows you read your Kindle books, instantly as well as offline on your browser.
How to Find E-Books and Download? Online E-book Search Engines
There are many search engines dedicated to e-book search are available. Also you can make use of browser plugins to search and find e-books.
Read more about how to find e-books.
- E-Book Search Engines For Free E-book Search and E-Book Download
- Firefox Plug-ins to Search and Find Free PDF E-books
10 Websites for Downloading Free e-Books
Free eBooks by Project Gutenberg
Project Gutenberg is an effort to digitize and archive cultural work founded in 1971 with over 40,000 digital books in its collection and over 100,000 free eBooks are available through Partners, Affiliates and Resources. 
There are many affiliated projects that use the Project Gutenberg trademark with a particular national or linguistic focus. This is a great source of e-books and no fee or registration is required to access its resources.
Free Book Spot free e-books links library
Free Book Spot is a free e-books links library where you can find and download free books in almost any category. Free Book Spot site provides indexes of other sites’ contents.
Free-Ebooks.net
Free-Ebooks.net is another online source for free eBook downloads, resources and authors. There are lot many categories and thousands of e-books to download and read.
You can register and read unlimited number of e-books. It also allows you to write books, submit books, promote your e-book and also provides a number of mobile apps.
ManyBooks
ManyBooks is another free e-book resource site. There are more than 29,000 eBooks available for Kindle, Nook, iPad and most other eReaders, and they’re all free. Apart from PG books the site also provides public domain and creative commons works from many other sources.
FreeComputerBooks
FreeComputerBooks has a collection of free Computer, Mathematics, Technical Books and Lecture Notes, etc.It is categorized by topics, with 13 top level categories, and over 200 sub-categories. It has both pattern and keywords search engines for you to find the titles quickly. Almost all the books listed in this web site are only links to other web site.
FreeTechBooks
FreeTechBooks lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available over the Internet. You are allowed to view, download and with a very few exceptions, print the books for your own private use at no charge.
OnlineFreeEBooks
OnlineFreeEBooks provides you collection of links to various eBooks (mostly in pdf) spanning in 9 categories to other websites containing eBooks/manuals/cheat sheets either for computer geeks, technicians, automotive enthusiasts or programmers.
Free eBooks section of BookChums
Free eBooks section of BookChums has more than 50,000 free eBooks of various genres for you to choose from. The site offers PDFs of eBooks: classics, self-help, romance, mythology, erotica, textbooks, short stories, novels, novellas and non-fiction among other genres. Moreover, there is a vast collection of eBooks for kids and college eBooks.
Free eBooks section of Bookdepository
Free eBooks section of Bookdepository has over 11000 free e-books collection. You can browse categories and add key search words and download them free.
Bookyards
Bookyards is another website where you can download free e-books.Bookyards has a total of 17,663 books, 41,808 external web links, 4,199 news & blogs links, 384 videos, 32,999 Ebook links and access to hundreds of online libraries (800,000 Ebooks)
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