If you’ve gotten this far, you’re probably ready to get started podcasting. But what should you talk about?

A lot of fiction authors read their own work, either a short story or poem per episode, or a chapter of a longer work. There’s even a website, PodioBooks, devoted solely to author readings of their novels in serialized form. This might be a problem if you plan to later sell your work, as some publishers may balk at paying for work that’s already available for free online, but a few authors have managed it very well. Or you might choose to podcast work that you don’t intend for publication — and later collect that work for publication when you’re better established.

If you don’t write fiction, or just don’t feel like reading your work aloud, you can talk about topics related to your niche. Review books in your genre, or interview other authors, or talk about the writing process. Talk about news in your area of interest. Describe the places you traveled, or the people you’ve met, while researching your latest feature article.

You can think of a podcast as an audio (or video) blog — whatever you might blog about, you can podcast about. It’s probably not a good idea to simply read your latest blog posts; try to add something in your podcast your audience can’t get in your blog. But if you can add something to what you’ve blogged, it’s not a bad idea to use the podcast to expand the stories.

One thing to keep in mind is that podcasting is a very intimate medium, and just like talk radio, people value the interactivity of it. Make sure you give out an email address and tell your listeners that you value their feedback. You could also get a toll-free number and ask your listeners to leave you voicemail; Kall8 offers a personal toll-free number with lots of features for only $2 a month. Make sure you read your emails and play your voicemails on the show. And for the ultimate interactivity, use a service like BlogTalkRadio and take callers live on the air!