The concept of Podcasting is easy to understand but far more difficult to implement, produce and publish. For receiving Podcasting materials, the most easy way is to downloand itune from http://www.apple.com/itunes/ and then you can subscribe a lot of interesting podcasting materials, such as CNN, BBC and other Pop songs. Some are free and some are marked with price for subscription. However, if you want to produce your own Podcasting station and for others to subscribe. You need to have some basic knowledge in audio recording, mixing and podcasting. Audacity (http://audacity.sf.net)is a easy-to-use and powerful freeware for audio recording and mixing. After producing your mp3, you need to upload the mp3 to a server and then you can make use of itune to podcast your mp3. The logistis is simple but difficult to a lot of beginners.