A podcast is a form of digital media that consists of an episodic series of audio or digital radio, subscribed to and downloaded through web syndication or streamed online to a computer or mobile device (Wikipedia). The word is actually a combination of the words iPod and broadcast. Despite the history of the word, podcasts can actually be accessed using any computer or other device that can play digital files.
There are four steps to creating a podcast:
1. Planning
2. Recording
3. Editing
4.Publishing
For an excellent overview of steps needed to create a podcast, please see the Virginia Commonwealth University Overview for Podcast Creation - developed by Eric Johnson.
"Microphones" - Roadside Guitars - Numerous microphones restored by Ben and Matt at Silvia Classics, 2008 - CC BY-SA 2.0