How can I do a podcast for free?

Make a http://www.blogger.com account.
Connect it to http://www.Feedburner.com
Add content.
Write down the feedburner url.
(Now you have an RSS feed, the system podcasts use)

Register with iTunes(?) http://itunes.com

With out registering in iTunes you can:
In iTunes click advanced, then subscribe to podcast, then enter the RSS feed url. (Tell your friends and give them a http://www.bit.ly link (add + to the end to view statistics)). When you add say, a video, it will download in iTunes.

Oooh. What are you going to podcast about? Will it be video, too, or just audio?

Audio. There are a couple of us who are doing it. I am taking a challenge this weekend to record an hour by myself about the following topics.

Street Signs
Sports
Mountains
Fireworks
Mail

That’s twelve minutes per topic without any silence. I promised my co-hosts 75% gold.

I’m thinking of giving them eighty.