Need help for my studies

Hi.

I'm from Germany and studying Literature, Culture and Media. Have to write a homework about the story of success of The Lord of the Rings.
Now I'm looking for a page, where I could find profound information about:

- Theories, why it is such a great and constant success (backrounds, human psychology...)
- what is in it that makes it timeless
- comparison with Roling's Harry Potter and its remarkeble spreading
- sales figures (before and after the films)
- success entailed by representation in media (web, magazines, cinema...)

I'm even eager to know about your own theories in this points and would be glad, if there could be compiled some different views and ideas.

please feel free to post... [img]smilies/smile.gif[/img]