This is a very nice, practical summary. Covers consuming, creating and publishing podcasts:

Blogging 101 - Podcasting: “The latest buzz in the Blog Realm (and everywhere else it seems) is something called ‘podcasting.’ The term ‘podcasting is ‘a portmanteau of the words iPod and broadcasting.’ The primary goal of podcasting is to make audio (broadcasting) portable by automatically downloading programs onto mp3 players like the iPod. Four Minutes About Podcasting is a video that gives a brief overview of the technology, how it works and why it’s so much fun. However, as the video points out, you don’t really need a portable device to join the podcasting revolution, you simply need an internet connection, some podcasting software and a computer that plays mp3 files (all of them do). How Does It Work? There are two obvious aspects of podcasting: the consumption of the podcasts and the creation of the podcasts. First, let’s look at podcasting consumption (finding and listening to great audio). To start listening to podcasts…”

(Via Quixtar Blog.)