GarageBand is like your own recording studio. With GarageBand you can learn to play an instrument, write music, record a song or create a podcast! GarageBand is one of the iLife applications, and is designed to interface seamlessly with iMovie, iPhoto and iDVD.

Podcasting in Plain English

GarageBand Workshop Handout:

GarageBand and Podcasting Resources for Further Exploration

What is a Podcast?
Podcasting 101 Wiki