Robert Basic recently posted this introduction to the Zend Framework, a simple overview to how the framework is laid out and how you can get started.
Zend Framework is a big & heavy object-oriented framework for PHP. I started working with ZF a couple of months ago, I liked it's documention (it's very well documented) and decided to stick with this framework. Here is the latest version of the framework — at the time of writing v1.6.1.
He talks about the framework's use of the MVC pattern, its coding standards, and some of the basic terms and file structure behind a simple ZF application. He's even included an .htaccess file and a sample bootstrap (index.php) to get you started.