Disclaimer: yes, I know I've been lazy and 
copied/pasted a lot of the drums rather than 
painstakingly doing all the fills. Deal with it. I've done 
the same with bass in spots - the bass is also quite 
hard to make out at parts, so sorry for any mistakes. 

For the tapping part, put the left hand as if you were 
playing an E octave (C string fourth fret, F string muted, 
A# sixth fret) while you tap; let the left hand notes ring 
out to get that sustained sound. Do the same when 
the left hand plays the other octabes. If the tabbing 
looks/sounds a bit confusing, I've just tried to replicate 
how it's played; listen to the track if the sliding seems a 
little weird.

When I saw the 'cocke live, Jason chucked his pick 
away and tapped the 12 with his index and 13 with his 
middle finger (Matt just did it with his middle finger and 
held the pick). I find it much easier to be accurate 
doing it Jason's way, but try both.