Forum Moderators: not2easy
Welcome to Webmasterworld. Every website finds a different solution to organizing its content, so I can't suggest a one-size-fits-all solution.
However, here's a link to one of the classic articles.
Theme Pyramids [searchengineworld.com]
Good luck
I just thought of another really good set of threads on information architecture. A while ago, Tedster wrote two great articles about Information Architecture. They're powerful rocketfuel.
Information Architecture for the Small Site Part 1 [webmasterworld.com]
Information Architecture for the Small Site Part 2 [webmasterworld.com]
Also, if you haven't read it, be sure to go read the granddaddy article on webmastering. Brett's 26 Steps to "Getting It" [webmasterworld.com]
These articles should give you a good start to thinking about your site's architecture. There are also more good articles in the WebmasterWorld library.