In addition to e-books to buy, there are thousands of free e-books available on Google’s eBookstore: http://books.google.ca/ebooks
These e-books can be read on your Android, iPhone, iPad, or e-reader (including Kobo/Nook, Sony Reader, etc). OR you can download the free GooReader for your desktop. For more information, go to Kim Komando’s website – I learned about these great resources on her Download of the Day e-newsletter!