This is only for Guitar 1
Sum 41 is an awesome band, and im pretty sure this is almost 100% correct
this is in dropped D tuning
Key:x=mute
    ~=let it ring
Intro:
Guitar 1
|--------
|--------
|--------
|--------
|-------5
|-333-33- about 9 times until the verse starts
Intro:(this is the only part i know for guitar 2 so i threw it in) 
Guitar 2
|-------------------------------------
|-------------------------------------
|-------------------------------------
|-------------------------------------
|-7-5-00-xxxx-55-xxxx-88-xxxx-77-10-10
|-7-5-00-xxxx-55-xxxx-88-xxxx-77-10-10 

|---------------------------------
|---------------------------------
|---------------------------------
|---------------------------------
|-00-xxxx-55-xxxx-88-xxxx-77-10-10
|-00-xxxx-55-xxxx-88-xxxx-77-10-10

verses (both guitars, and both verses)
|---
|---
|---
|---
|-0~
|-0~ let it ring 

Pre Chorus
('im losing my mind and i dont think you could save me this time')
|--------------
|--------------
|--------------
|--------------
|-00-55-88-7-10
|-00-55-88-7-10 x2

Chorus
|-x-x-x-x-x-x-x-x-x
|-x-x-x-x-x-x-x-x-x
|-5-5-7-7-8-8-10-10
|-x-x-x-x-x-x-x-x-x
|-3-3-5-5-6-6-8--8
|-x-x-x-x-x-x-x-x-x

|-x-x-x-x-x-x-x-x-x
|-x-x-x-x-x-x-x-x-x
|-5-5-7-7-8-8-8-10-10
|-x-x-x-x-x-x-x-x-x
|-3-3-5-5-6-6-6-8--8  listen for timing!

Then the verse again
Then the prechorus again
then the chorus again

Bridge
(its dragging on im wearing thin i cant stop these walls they keep caving in...)
ill finish the rest after