One of the best ways to learn the guitar is definitely to study the styles and work of others. Having grown up through the TDK cassette generation before graduating to CD I spent many hours rewinding and repeating guitar solos in an often vain attempt to work the notes out by ear.
Garageband is one of those Apple applications that I appreciate massively. It isn’t the fact that it is one of the most powerful and easy to use podcast creators or audio editors but the appreciation comes for its power as a multitrack recorder. Having played in numerous bands growing up I am no stranger to multitrack tape recorders, I frankly hated them.