Is any special training or school required to use and make podcasts?

A podcast can be easy to create and use, although it depends on which site you choose.  There could be some training involved if you wanted to be more in depth, which would have costs associated with them.  One could hire someone to monitor, update, and maintain podcasts for their business if they didn’t have the time to monitor it themselves which could become costly.  If you are computer illiterate then you would have to take some training that would teach you how to use computers, and downloads.  Once you learn how to use a computer and the internet, most programs and free downloads are user friendly as long as your read all that is involved. 
Check out this website to learn how to create a podcast...

http://www.ehow.com/how_2003177_create-a-podcast.html