The best way of understanding how to structure and design your podcast is to listen critically to other podcasts. Make notes on the features you like, along with considering things such as pace, tone and techniques to engage the listener.
Here are a list of some podcasts available from the University of York and those that have been recorded in the Creativity Lab's podcast studio.
If you're an active member of the University, let us know if you'd like your podcast adding to this list via lib-creativitylab@york.ac.uk.