Reading is to the mind what exercise is to the body. -Joseph Addison.

Find below some links which will help you download free ebooks & exercise your brain.

PDFGeni PDFGeni is a dedicated pdf search engine for PDF ebooks, sheets, forms and documents. They have even come out with iPhone Edition, ofcourse it is in beta.

BookYards BookYards wants to be the “The library to the world”. Here you will find lots of ebooks, external web links & videos. They have 16000+ ebooks in 35 different categories.

Planet eBook Planet eBook offers free classic literature for downloading. They have 59 free ebooks. You can even suggest a classic free ebook.

Scribd Scribd allows you to share documents online. It supports Word, Excel, PowerPoint, PDF and other popular formats. People even call it YouTube for documents. You can download free ebooks or embed it in your blog. Beware there are some copyrighted ebooks as well.

Free Tech Books Free Tech Books lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available over the Internet.

E-Books Directory E-Books Directory has downloadable ebooks, documents and lectures. You can submit your own ebooks or add comments on other ebooks. They have more than 600+ ebooks.

Free Book Spot Free Book Spot is a free ebooks library where you can download free ebooks without registering. They have more than 90 categories and 4000+ free ebooks to choose from. You can even add a free ebook. To add you need to register. Registration is free.

MemoWare MemoWare is a unique collection of thousands of documents (databases, literature, maps, technical references, lists, etc.) specially formatted to be easily added to your PalmOS device, Pocket PC, Windows CE, EPOC, Symbian or other handheld device.

Project Gutenberg Project Gutenberg is a well known and one of the oldest website for free ebooks. They have largest collection of public domain books. Books which are no more copyright and are available to anyone for any purpose. There are over 25000 free books. If you are unable to decide which book to start from check out their Top 100 Ebooks and Authors page.

ManyBooks ManyBooks provide ebooks different formats. You can read ebook on you PDA, Palm, Pocket PC, And even on iPhone or iPod. They have 22000+ free ebooks. You can browse through the most popular titles, recommendations, or recently reviewed by the visitors. They even have a special collections page for you find an ebook quickly.

Free-eBooks Free-eBooks is an online resource for free ebook downloads. Lots of useful free ebooks, tutorials and free magazines. You can even submit your ebook, they charge for its promotion.

KnowFree KnowFree is place for users to exchange freely ebooks, video training and other materials for educational purposes, self-practice only. It has 8000+ knowledge material in 10 categories.

The eBook Directory The eBook Directory has 550+ free ebooks. They have a good collection in business, marketing & self improvement categories.

Witguides Witguides provides wide range of free ebooks. They have 300+ free ebooks you can download then without registering. You can also submit a free ebook.

Diesel eBooks Diesel eBooks provides free ebooks formatted for both Microsoft Reader and Mobipocket. Their free ebooks include over 413 authors and over 750+ titles.

Free Computer Books Free Computer Books has a huge collection of Free online Computer, Programming, Mathematics, Engineering, and Technical Books, Lecture Notes and Tutorials. It has 12 top level categories and over 150 sub-categories. Most of the ebooks are links to other websites.

Feedbooks Feedbooks provides thousands of free ebooks. All ebooks are compatible with Smartphones, Blackberry, PDAs, iPhone & iPod. You can browse ebooks by well known authors, most downloaded & most commented. It is one of the most neatly designed free ebook website.

Get free ebooks Get free ebooks is a free ebooks site where you can download free ebooks totally free. All the ebooks within this site are legal downloadable free ebooks. It has around 370+ free ebooks in 57 categories.

The Online Books Page The Online Books Page facilitates access to books that are freely readable over the Internet. It also aims to encourage the development of such online books, for the benefit and edification of all. Lists over 30,000 free books on the Web.

SnipFiles SnipFiles offers you free ebooks either brought or attained PLR, resale or master rights to all the products and making them available free for download.

Ebooks Download Free Ebooks Download Free contains large collection of pdf and chm books free download you can download free ebooks from many categories. It categories ebooks in 25 different categories.

eBook-X eBook-X provides more than 500 free computer related ebooks for download in 44 categories.

Public Literature Public Literature have over 500 books and over 300 audio books. It showcases some of the greatest authors from around the world. They also provides a user-friendly interface to read books online.