Podcasting involves recording audio or video files and making them available for digital distribution over the Internet. Listeners can subscribe to podcasts using an RSS feed and download files to computers or mobile devices like MP3 players to listen to anytime. The document provides tips on how to create podcasts, including using free or low-cost audio and video recording and editing software on computers, planning content that is 10-20 minutes long, and considering audio quality and background noise when recording.