Searching for Podcasts

I usually use iTunes to search for Podcasts. I have been subscribing to podcasts for some time now. I subscribe to shows that I often listen to on the radio on NPR, but often end up missing. I also subscribe to shows that I don't have access to, such as Real Time with Bill Maher, which comes on HBO, a station I don't get at home. I also subscribe to a few podcasts that help me with my job such as Language Lab Unleashed. I listen to these podcasts on iTunes on my computer and using an iPod. I found getting the NPR podcasts from the NPR page was quite confusing. I kept looking for a button that said "Subscribe", but couldn't. I found subscribing to the RSS feed to my Google Reader much easier. I am taking a Spanish class right now, so I subscribed to a Spanish learning podcast called InstaSpanish. I really enjoy saving these podcasts to listen to when I'm doing something tedious like gardening, or burning CD's at work, or doing housework.