From Lisa Durff

You only need two things to create: a headset and Audacity (with the
llame file both of which are free). After creation, export as mp3 on
file menu. Then upload to Podomatic (also free).
So go to
http://www.podomatic.com/
register
then choose my podcasts
then post an episode
record it straight in…

Then embed a player, url link, or something where you would link the podcast. I don't often
use the podcast url space because it tends to confuse the learners.
Podcast away!

Making your podcast more pro
Podcasting presentation
Podcasting 101

Great examples of podcasts:
http://allanah.wikispaces.com/Podcasting