People

Intro
e-----------------| 
B-----------------| 
G-----------------| 
D-----------------| 
A-3-3-3-h-5-------| 
E-----------------| 

e------------------| 
B------------------| 
G------------------| 
D------------------| 
A-3-3-3-h-5-p-3--5-| 
E----------------3-| 

Main riff
e----------------------------------------------|                         
B----------------------------------------------|                         
G----------------------------------------------|                         
D----------------------------------------------|                         
A-(3)-3-h-5-5-5-3-3-5-5-5--3-3-3-h-5-p-3-3-3-3-|                         
E----------------------------------------5-5-5-|   Note in () not played 

                                                 first time
Mid Section
e--------------------| 
B--------------------| 
G-7------------------| 
D-7------------------| 
A-5-------5----------| 
E---------3----------| 


Outro riff
e-----------------------|                              
B-------6---------6-----|                              
G-5-h-7---7-5-h-7---7-5-|                              
D-----------------------|   Repeat riff several times. 
A-----------------------|                              
E-----------------------|                              

Changes later to:
e----------------------|                                
B-------6-6------------|                                
G-5-h-7-7-7------------|                                
D-0-----0-0------------| Repeat riff until end of song. 
A----------------------|                                
E----------------------|                                

The effects I find best are distortion and a phaser effect.