Remember - you won't understand what they're talking about! If you give these podcasts your full attention you'll just get frustrated. So listen to them in the background while you're doing something else. But do make sure to Google some of the technical terms that seem important. Once you've begun to get familiar with the terminology it will begin to make some sense. Be realistic about what you can achieve, though. You want an "awareness" of IT, you're not aiming for mastery. Even IT professionals regularly come across whole bodies of knowledge they know nothing about!