GarageBand is fun application found on your MacBook Air that can be used to make audio recordings and audio recordings with music. Unlike audio recordings made with QuickTime Player, the recordings made in GarageBand can be exported as MP3 files to be used with other applications and programs. GarageBand is a fun way to spice up your recordings.
Below are 3 how-to videos to help learn the basics of GarageBand.
How to Make an Audio Recording with GarageBand
How to Add Music to Your Audio Recording in GarageBand
How to Export Your Audio Recording in GarageBand as an MP3 File