In this week's Independent, Brian Russell has a step-by-step yes-you-can-do-this-at-home introduction to podcasting: DIY radio: Or how I learned to stop worrying about the media and start podcasting. Worth a read.
Also, if you can, show up next week (Saturday, January 7th) at the Podcastercon that Brian (with a little help some others) is organizing. Check the Podcastercon Wiki and the blog. I'll be there.