Open to anybody who knows the basic chords on the guitar. If you are comfortable with the following chords, you'll be fine: G, C, D, A, E, F, Em, Am, Dm, E7, A7, D7, B7. We'll encounter some other material along the way, but those chords should be enough to start with.
If you want to listen ahead, you can hear the songs from Vol. 1 via
this link. Vol. 1 is tracks 1 - 14.