(this riff is played throughout the verses and outtro, / = slide) 
  G
E|---------------------------------------------------------------------|
B|---------------------------------------------------------------------|
G|---------------------------------------------------------------------|
D|---------------------------------------------------------------------|
A|---------------------------------------------------------------------|
E|-3-3-3-3/5--5-5-5/7--7-7-7--7-7-7--3-3-3-3/5--5-5-5/7--7-7-7-7-7-7-7-|
  G
E|---------------------------------------------------------------------|
B|---------------------------------------------------------------------|
G|---------------------------------------------------------------------|
D|---------------------------------------------------------------------|
A|---------------------------------------------------------------------|
E|-3-3-3-3/5--5-5-5/3--3-3-3--3-3-3--3-3-3-3/5--5-5-5/3--3-3-3-3-3-3-3-|

For the pre-chorus, transition from the verse riff (G) to the the chord (Em) strumming like this: 

E|---------0--|
B|---------0--|
G|---------0--|
D|---------2--|
A|---------2--|
E|-3-3-2-2-0--|


[Verse 1]
G
I've been a lonely girl, I've been a lonely girl 
G
But I'm ready for the world, Yeah I'm ready for the world
G
I been a heart for hire, I've been a heart for hire
G
And my love's on the funeral pyre, My love's on the funeral pyre

[Pre-Chorus]

Em                                   G
When will you, when will you help me out
Em                              D                        
You can't even pick me out of the crowd, oh oh oh, oh oh oh

[Verse 2]
G
I've been nobody's child, I've been nobody's child
G
So my blood started running wild, oh my blood started running wild
G
I've been a hungry ghost, I've been a hungry ghost
G
And I've traveled from coast to coast, oh I've traveled from coast

[Pre-Chorus]

Em                                   G
When will you, when will you help me out
Em                                 G   D
You can't even pick me out of the crowd 

[Chorus]

       C                   G   
Oh and I, I don't need you anymore
        C                         G  D
So then why am I standing at your door? oh oh oh, oh oh oh

[Outtro] 
G
I've been a lonely girl, I've been a lonely girl 
G
But I'm ready for the world, oh I'm ready for the world
G
Well I'm ready for the world, oh I'm ready for the world
G
Oh I'm ready for the world, Oh I'm ready for the world
G
Well I'm ready for the world