Project Gutenberg holds over 36,000 out of copyright, (many are classics) ebooks which can be downloaded for free.
If you need software to convert the various ebook formats and download/upload to your reader I can recommend calibre. Again it's free and works on Linux, OSX and Windoze.
Evening All
Went on to ishunt, silly question. How do you down load them?
Or is it so obvious I cant see the wood for the trees? Down loaded some 'Apps'
That are pushed on the site, must be an age thing. . .. .