im a somewhat beyond basic guitar player, i would say. ive been practing a good dozen different songs. ive learnt and can play along to crawling in the dark by hoobastank thanks to this sight. i can decently keep up to tempo to most of the song, even if my technique is somewhat sloppy, but the into to the song is a barrage of very fast palm muted alternate picked notes and if i play it up to tempo i screw up big time. i end up getting obsessed with it and playing it for hours, not really making much progress, when i could be practicing something else and getting altogether better with guitar

does anyone have any practice tips for this intro?