Engadget has a great how-to article on Podcasting that shows you how to get Podcasts on your iPod and how to make your own Podcasts using mostly free tools. “So what’s a Podcast? To put it simply, a Podcast is an audio file, a MP3, most likely, in talk show format, along with a way to subscribe to the show and have it automatically delivered to your iPod when you plug in to iTunes. The show isn’t live, so you can listen to it whenever you want.”