Google Books contains many ebooks, some for free and some for sale.
If the book is out of copyright, or the publisher has given Google permission, you'll be able to see a preview of the book, and in some cases the entire text.
If it's in the public domain you can download a free PDF copy.
- Go to the Google Books website.
- Click on Advanced Book Search.
- Click on Full View Only to limit your search to eBooks available in full text.
- Enter your search terms in the appropriate fields.
- Click the Search button.
- Click on the title of the eBook you wish to view.