This tab is pretty easy. The tuning is GDAD, drop E to a D. I made the timings correctly as possible there are two main parts to this song, the Verse and Chorus, and the pre-chorus and the first part in the beginning.

Crawling
Linkin Park
www.linkinpark.com

Pre-Chorus 1x
G|--------------------|
D|--------------------|
A|-0--7-2--7-4--2-----|
D|----------------0---|

Chorus 2x
G|---------------------------------|
D|---------------------------------|
A|---------0--0-0----------2--22---|
D|-0--0-0----------2--2-2--------6-|

Verse 3x 
G|------------------|
D|------------------|
A|-----0-------2----|
D|-0-------2------6-|

PRE-CHORUS 2x

Chorus 2x

Verse 2x

PRE-CHORUS 2x

CHORUS 6x

Well that is it. You should prob. listen to the song to get correct timings.