this first riff looks strange but it is correct because I've seen the guitarists play it on TV. 
E|-------------------------------------------------------------------| 
B|-------------------------------------------------------------------| 
G|----------------?--------------------------------------------------| 
D|-------------------------------------------------------------------|   Riff 1 
A|--17-17--17-------17-17--17---------------------17--------------17-| 
E|------------19-17-----------19-17--16-16--16-19----16-16--16-19----| 
 
 
E|--------------------------------------------------------------------------------------------------------| 
B|-15-15--15-10-10--10-12-12--12-14-14--14-12-12--12-14-14--14-10-10--10-15-15-----| 
G|-16-16--16-11-11--11-12-12--12-14?14--14-12-12--12-14-14--14-11-11--11-16-16--| 
D|-16-16--16-11-11--11-12-12--12-14-14--14-12-12--12-14-14--14-11-11--11-16-16--|    
A|-14-14--14--9--9---9-10-10--10-12-12--12-10-10--10-12-12--12--9--9---9-14-14--| 
E|------------------------------------------------------------------------------| 
 
solo 
E|-------------------------------------------------------------------| 
B|-9-7---7-----------------------------------------------------------| 
G|-----9---9-7-9-7-6-7-6---------------------------------------------| x4 
D|-----------------------9-------------------------------------------|    
A|-------------------------------------------------------------------| 
E|-------------------------------------------------------------------| 
 
E|-----------------------10-9------------------12b14-12-10p9------------12b14-10p9-----------| 
B|-12-12-10p9------------------10p9--------------------------12p10-12-9----------------9b11-| 
G|------------11p9-11---?-----------11p9-11-----------------------------------------------------| 
D|--------------------12--------------------12---------------------------|    
A|-------------------------------------------------------------------| 
E|-------------------------------------------------------------------| 
 
solo 
E|-------------------------------------------------------------------| 
B|-9-7---7-----------------------------------------------------------| 
G|-----9---9-7-9-7-6-7-6---------------------------------------------| x4 
D|-----------------------9-------------------------------------------|    
A|-------------------------------------------------------------------| 
E|-------------------------------------------------------------------|