GARAGEBAND
GarageBand is a free DAW for Macs that you can also use on iPhones and iPads.
These videos and websites will help you to learn how to use it.
Beginner Tutorial Videos
Beginner Tutorial Videos
Learn GarageBand in under 10 minutes
Tutorial for beginners in 11 minutes
Tutorial for beginners
GarageBand for Mac Tutorial
Playlists
Playlists