web url links to some E-Books and notes

Here are a few web url links to some E-Books and notes:
http://www.freebookcentre.net/
http://www.downloadpdffree.com/
http://www.freecomputerbooks.com/
http://www.it-ebooks.info/
http://www.e-booksdirectory.com/
http://www.ebookslelo.com/

Nicely arranged blogs to E-Books:
http://www.welearnfree.org/
http://btechguide.com/gate/download-all-computerscience-books.html
http://basudip.blogspot.in/2011/12/CSITeBooks.html
http://www.renukainfotech.com/e_books.html
http://computersciencehelpdesk.blogspot.in/p/download-ebooks.html
http://www.downloadvilla.com/index.php?genre=Computer

You may even search for more E-Books here:
http://www.filecrop.com/search.php
http://filecatch.com/
http://en.bookfi.org/
http://gen.lib.rus.ec/

you are encouraged to upload and share all good resources (E Books & Notes), but please refrain yourself from requesting any e-books. Any web url you find useful may be appended in comments section of this post by the members. Thanks for your cooperation in keeping the group page clean and informative.

Disclaimer : I am neither the author nor the administrator of any of those sites, I've just searched them on the web and giving my abstract report here. I request members to scan the url for any malware athttps://www.virustotal.com/en/#url before any downloads. It is always recommended to scan the files with updated antivirus tools and if suspected, the file may be submitted to the antivirus vendors for inspection.