Here are a few of the best resources.
Planet Money’s Robert Smith and KUOW’s Phyllis Fletcher give a great tutorial on telling radio stories over at transom.org.
WBEZ uses Marantz recording devices, but the iPhone’s voice memo function works just fine for starters. We also use Sony Vegas software for editing audio stories, but any software, like GarageBand or Audacity (which is free) work well.
Questions? Shoot Becky Vevea an e-mail at firstname.lastname@example.org and she’ll try to help out.