Did you get a bass guitar for Christmas?

Blitzkrieg Bop:

A (5th fret on the E string a.k.a. the fat one on top)
D (5th fret on the A string a.k.a. the next fattest string)
E (7th fret on the A string)
G (3rd fret on the E string)

A-D-E
A-D-E
A-D-E
A-D-A

E-A-D-A
E-G-D-A

That’s all you need to know. Now start a band!