Books

Podcasting Pocket Guide by Kirk Mc Elhearn, Richard Giles, & Jack D. Herrington. O'Reilly, 2006.

A nice short guide to podcasting, including how to listen to, create, and edit podcasts.

Podcast Solutions: The Complete Guide to Podcasting by Michael W. Geoghegan & Dan Klass. Apress, 2005.

A much more extensive, detailed guide to podcasting that is great for providing information on aspects of podcasting you are struggling with or want to know more about.