Subscribe to Podcast window

 
If you know the web address of a podcast, you can add this directly to your iTunes podcast library by right-clicking the Podcast library (or the LIBRARY heading at the top of the iTunes library pane.  Select the menu option 'Add a new Podcast'; the following dialog will be displayed:
 
Subscribe to Podcast window
1

Podcast URL address

1. Podcast URL address
 
Enter the address of the podcast you wish to add. Most podcasts provide an RSS feed as well as a direct iTunes link.  Ensure you enter an RSS style podcast address as at the time of writing, iTunes style podcast addresses are not yet supported.