Really easy through the whole intro, it just repeats itself
Standard Tuning

E|------------------------------------------------------|
B|------------------------------------------------------|
G|------------------------------------------------------|
D|------------------------------------------------------|
A|-11-11-11-11-11-11-11/14141414141414\9999999\77777777-|
E|-9--9--9--9--9--9--9-/12121212121212\7777777\55555555-|x4

    ^^^^^^^^^^^
With the 11s and 9s they play at the same speed as the rest its just easier
to read as it is now. And you just Repeat this 4 times. the drumming and Bass
come in at the start of the 3 repeat.

Good Luck