Net.Tuts+ has a good tutorial on the Kohana PHP framework. Following it through should get you used to the MVC structure, help you configure everything, and give you a good overall feel for the framework. Coupled with the official Kohana docs, you should be able to get up and running in no time.
Kohana is a PHP 5 framework that uses the Model View Controller (MVC) architectural pattern. There are several reasons why you should choose Kohana but the main ones are security, weightlessness and simplicity. In this tutorial, I’ll introduce its main features, and, with a simple demonstration, I’ll show you how much time Kohana can potentially save you.
Kohana: The Swift PHP Framework [Net.Tuts+]