The Main Riff:
e|-----------------------------------33---3-----|
B|-11---11---11---1-3-55---55---55------5-------|
G|--------------22------------------------------|
D|----------------------------------------------|
A|----------------------------------------------|
E|----------------------------------------------|

The bridge is better to learn by ear so you can add your own improvisation to it.
Also, for the main riff the first 3 notes are two 1's, not 11. :]