While there are many fantastic pieces written about capturing good audio and producing a strong story with audio, here are some that we often use in our courses at the Center for Documentary Studies.
How and Why to gather audio, by MediaStorm Founder Brian Storm: http://mediastorm.com/train/resources/gathering-audio/1
StoryCorps Do It Yourself -Instruction-Guide To listen to StoryCorps, visit:
Radio Diaries Handbook To hear radio diaries produced by Joe Richman, visit
Radio Docs Take Listeners into Dark Corners