An ebook is a digital computer file containing a book that can be downloaded from the Internet to a computer or directly to an ebook reading device, which may also sometimes be referred to as an ebook.
Following are the resources that allow you to quickly find ebook you need.
Mega PDF indexes more than 379 million free downloadable eBooks in PDF format. From novels to biographies to technology books, you can find everything here.
It is an another interesting PDF search engine for ebooks.
It is a free PDF search engine to search millions of PDF ebooks.
If i missed something ,then drop ur views @ comments .