Use Drop-D Tuning  

0:08

G ----
D ----
A ----
D 12\0

0:10 Main Riff

G -----------------
D -----------------
A 3333---------1111
D ----6666-3333----

0:40 Chorus
               
G ---------------------        
D --------------2-2-2-2 <------ (Staccato at "somebody help me")
A 3333/6666\1111-------
D ---------------------

 2:00 Bridge              2:20

G ----------------------  ----------------------------
D ----------------------  ----------------------------
A ------------3-11--3-11  -------------------1-1-1-1-1
D 00000-33333-----------  -00000-33333-66666----------

At 2:42, play the main riff but hit the notes once and let them ring.

At 2:57, rest entirely, then come back in at about 3:10 with the 
A-1-s, then play the chorus and main riff to the end, sliding down to
D-0- to end the song.