Yeah, as FretboardToAsh said, the key to learning anything is understanding the notes at a slow speed and then gradually increasing them to the correct tempo.

Also, you should probably use the PowerTab version of this song that's on this site, it'd be easier to learn from, especially since you're having trouble with timing.
Proud owner of an Engl Thunder 50 Reverb and an Ibanez S470

"The end is extremely fucking nigh..."