This document provides an introduction to using Yahoo! Pipes by explaining four examples of how to use Pipes to munge, mix, and mash data. It discusses how to create a simple RSS feed truncation pipe, munge multiple feeds together and sort them, filter attended events from an Upcoming calendar into an RSS feed, and surface Twitter replies to questions into a new feed. The document encourages exploring additional Pipes features like using YQL and pipes within pipes, and posting data to web services.