NetTuts.com has a new tutorial posted today introducing you to Statamic, a PHP-based content management system that uses flat-files instead of database entries to manage its content. (One note, Statamic is not free software and there's no "trial" version)
Statamic is a modern PHP CMS which really makes an effort to be easy and intuitive to use. From its flat-file design to its use of technologies, like markdown and Yaml, you can accomplish an outstanding amount of work without writing any code at all. In this article we will take a look at the process from installation to setting up a basic portfolio.
The CMS (downloadable here) has a simpler structure than some other systems as most of the content is just files in the "_content" directory. They talk some about the directory structure of the tool and help you get things configured via the main YAML config. The post then moves on to working with themes and how to get dynamic content in a basic layout. From there they go on to talk about making new content, adding entries and various other topics like administration and templating.