Maybe you want students to listen to information before they come to class. Maybe you want to make a recording available to them for review. Or maybe you want them to create a podcast episode of their own. There are many reasons to create podcasts, and the following links and articles provide practical tips and instructions for doing so.
How to Create and Deliver Audio Podcasts (advice from the University of Wisconsin about technique, equipment, and software)
Eight Basic Voice Recording Tips (from NspirD2, a teaching with technology blog from Notre Dame)
Spotify for Podcasters (create a free podcast channel for your class)
"The Power of Podcasting" (from the Journal of Instructional Research)
"Exploring the use of video podcasts in education: A comprehensive review of the literature" (from Computers in Human Behavior)