You can always tell that an industry has fully matured when there are conferences for learning more about it. Conferences are a great place to learn, network, grow, and celebrate your industry. Even podcasting has one, called Podcast Movement, which will hold it's 3rd annual gathering this July in Chicago.
The reason I bring that up is because this year, I'll be one of the speakers there. So if podcasting is your passion, and you want to learn from dozens of professionals about production, creation, marketing, monetization, and everything else, you should really put this conference on your list for this summer.
Learn more about it here.