Here are a number of audio resources to get you started.
Audio Recording
Sound Reporting (The NPR Guide to Audio Journalism & Production)
Audio Recorders (Knight Digital Media Center)
Gathering Audio (Mediastorm)
Audio Recorders (Knight Digital Media Center)
Audio Editing
Audacity (download a copy for free)
Audacity tutorials (Audacity)
Audacity Wiki (Latest tips and trick for Audacity)
Audacity Instructions (Knight Digital Media Center)
Using Apple’s GarageBand (Apple Support)
Introduction to Adobe Audition (getting started with Audition)
Copyright Law
Public Domain Music (Public Domain Information Project)
Creative Commons (sharing and reuse of creativity and knowledge through the provision of free legal tools)