There's a lot of open notes in this and it's pretty easy so don't worry about it.

Tab guide
pm.......... palm mute.
B bend note
S slide
Tuning drop D (D,A,D,G,B,E)

intro
pm............................................................
---------------------------------------------------------------e
---------------------------------------------------------------B
---------------------------------------------------------------G
---------------------------------------------------------------D
-0-0-0-0-2-3-2-1-0-0-0-0-1-2-1-0-0-0-0-2-3-2-1-0-0-0-0-1-2-1-0-A
---------------------------------------------------------------D
main riff
---------------------------------e
---------------------------------B
---------------------------------G
---------------------------------D
-0-0-0-0-2-3-2-1-0-0-0-0-1-2-1-0-A
---------------------------------D
Verse
                                    pm........................................
----------------10----------------10-------------------------------------------e
-10B11-10B11-10----10B11-10B11-10----------------------------------------------B
-------------------------------------------------------------------------------G
---------------------------------------------6--------------------7-0-0-0-0-0--D
---------------------------------------------6--------------------7-0-0-0-0-0--A
-------------------------------------0-0-0-0-6-0-0-0-0-0--0-0-0-0-7-0-0-0-0-0--D
middle section.
            pm..............................................
-15S18-15S18-------------------------------------------------e
-------------------------------------------------------------B
-------------------------------------------------------------G
-------------------------------------------------------------D
-------------------------------------------------------------A
-------------0-0-0-0-0-0-5-0-0-0-0-0-0-0-0-0-0-0-6-0-0-0-0-0-D
Middle section heavy part.
------------------------------------------e
------------------------------------------B
------------------------------------------G
------------------------------------------D
------------------------------------------A
-0-0--0-3-0-0-0-0--0-0--0-4-0-0-0-0-------D