The intro is very simple:

   G (320003@1)               C (x32010@1)         Geb|-3-3-3-----3---3-3-0-3-3-3-----3---3-3-0| (320003@1)Bb|-0-0-0-----0---0-0-1-0-0-0-----0---0-0-1|
Gb|-0-0-0-----0---0-0-0-0-0-0-----0---0-0-0|
Db|-0-0-0-----0---0-0-2-0-0-0-----0---0-0-2|
Ab|-2-2-2-----2---2-2-3-2-2-2-----2---2-2-3|
Eb|-3-3-3-----3---3-3---3-3-3-----3---3-3--|

Now comes a verse, which we use palm muting for: just hold the end of your wrist just 
the treble pickup.

   G (320003@1)                     C (x32010@1)                     Emeb|---------------------------------------------------------------| (022000@1)Bb|---------------------------------------------------------------|
Gb|---------------------------------------------------------------|
Db|---------------------------------------------------------------|
Ab|-------------------------3-3-3-3-3-3-3-3-3-3-3-3-2-2-2-2-2-2---|
Eb|-3-3-3-3-3-3-3-3-3-3-3-3---------------------------------------|

    D (xx0232@1)         G (320003@1)         G (320003@1)      Ceb|----------------------------------------| (x32010@1)Bb|----------------------------------------|
Gb|-2-2-2-2-2-2----------------------------|
Db|----------------------------------------|            X2
Ab|----------------------------------3-3-3-|
Eb|-------------3-3-3-3-3-3-3-3-3-3--------|

Now comes the pre-chorus:

    Em (022000@1)       D/F# (200232@1)       G (320003@1)         Ameb|---------------------------------------------------| (x02210@1)Bb|---------------------------------------------------|
Gb|-------------2-2-2-2-2-2---------------------------|
Db|---------------------------------------2-2-2-2-2-2-|
Ab|-2-2-2-2-2-2---------------------------------------|
Eb|-------------------------3-3-3-3-3-3---------------|

For the chorus, use normal strumming:

    C (x32010@1)  D (xx0232@1)         G (320003@1)         Em (022000@1)        Am (x02210@1)        Deb|-0-0--2-2-2-2-2-2-3-3-3-3-3-3-0-0-0-0-0-0-0-0-0-0-0-0-2-2-2-2-2-2| (xx0232@1)Bb|-1-1--3-3-3-3-3-3-0-0-0-0-0-0-0-0-0-0-0-0-1-1-1-1-1-1-3-3-3-3-3-3|
Gb|-0-0--2-2-2-2-2-2-0-0-0-0-0-0-0-0-0-0-0-0-2-2-2-2-2-2-2-2-2-2-2-2|
Db|-2-2--0-0-0-0-0-0-0-0-0-0-0-0-2-0-0-0-0-0-2-2-2-2-2-2-0-0-0-0-0-0|
Ab|-3-3--------------2-2-2-2-2-2-2-0-0-0-0-0-0-0-0-0-0-0------------|
Eb|------------------3-3-3-3-3-3-0-0-0-0-0-0------------------------|
The Am and D have 2 bars, and, in the second time, you change the Am for a C

Intro

Verse

Pre chorus

Chorus

Intro

This is about the amount of basic info you need for this song. And please feel free to 
me and send any questions.