k folks, just taught myself this one today, so if it's wrong, not my prob.

for starters, tune your low E string down to low D

intro (soft) repeat 2X
E-----------------------------------------------------------------
B-----------------------------------------------------------------
G-----------------------------------------------------------------
D-----------------------------------------------------------------
A-0-0-0-0-------------------------0-0-0-0-------------------------
D---------3-3-3-3-3-3-3-3-3-3-3-3---------0-0-0-0-0-0-0-0-0-0-0-0-

verses (repeat until chorus, listen to the song for when to switch)

E------------------------------
B------------------------------
G------------------------------
D------------------------------
A-7--333-3-3-33-777-000-0-0-00-
D-7--333-3-3-33-777-000-0-0-00-

prechorus

E-------
B-------
G-------
D-0-3-2-
A-------
D-------

chorus

E-------------------------------------
B-------------------------------------
G-----0000-----0000-------------------
D-----------------------2222-----2222-
A-333------333------000------000------
D-333------333------000------000------

once you've got these patterns, figuring out how they fit together shouldn't be too hard

God Bless