h=hammer on
p=pull off
/=slide
*=harmonic
(4)=muted... or perhaps just a figment of my imagination.
Opening: Main riff (lots of jamming at end) (SEE FOOTNOTE 1)
G-|-------|-----------------------------------
D-|-------|-----------7-11-9--------------7-9-
A-|-------|---------9-----------------9-9-----
E-|-7*----|-(5)h7-7-----------(5)h7-7--------- (A in ()s is not always played)
Here's the usual use of the main riff during verses:
G-|----------------------------------------------------------7-11-9----------7-11-9-7h9-
D-|-------------7-9------------7-11-9-----------7-9--------9----------------9-----------
A-|---------9-9--------------9--------------9-9-----5/h7-7-----------5/h7-7-------------
E-|-(5)h7-7----------(5)h7-7----------(5)h7---------------------------------------------
G-|--------9-----------9----9-------------------------|------------------
D-|----------10----------10---10-------10-10-10-10-10-|------------------
A-|-----10-----------------------10-------------------|------------------
E-|-8-8----------(8)-8---------------8----------------|-0-0-0-0-0-0-0-0-0
G---A---C-B-G---A---C---B---(back to other thingy.)
| 
