The IBM developerWorks website has posted a feature article on Pipes that includes both an in-depth description of the project and a great tutorial. Here’s how they describe the article:
This tutorial provides a basic understanding of Yahoo Pipes, a service that filters, transforms, and aggregates content feeds. A complete run-through of the toolset available is included, as are three demonstrations that illustrate the capabilities and features of the service. Finally, step-by-step instructions for one of the demonstrations complete the tutorial, along with a recorded movie showing the steps in detail.
The intent of this tutorial is simply to describe the Yahoo Pipes service for managing available content feeds, focusing on the features, tools, and capabilities available.