How to read tablature? 
Intro - strum or fingerpick, x2 -:

    A             Gbm            D               E 
xA|-------3-----|-------0-----|-------0----0~-|-2-----|
xE|----0-----0--|----0-----0--|----1------1---|---3---|
xC|-0---------0-|-0---------0-|---------------|-----2-|
xG|-------------|-------------|-2-------------|-------|

Verse:
A               Gbm                 D 
I remember your bare feet down the hallway
  E                    A 
I remember your little laugh
                 Gbm 
Race cars on the kitchen floor
        D            E                         A   - Intro part - Gbm  D  E 
Plastic dinosaurs, I love you to the moon and back

Verse
A               Gbm                D                 E                  A 
I remember your blue eyes looking into mine like we had our own secret club
               Gbm             D             E                       A 
I remember you dancing before bed time then jumping on me waking me up
                     Gbm 
I can still feel you hold my hand
D           E                       A 
Little man, from even that moment I knew
                           Gbm 
You fought it hard like an army guy
  D                      E 
Remember I leaned in and whispered to you

Chorus:
D                  E 
Come on baby with me
                    A      D 
We're gonna fly away from here
    D       E          A     Gbm  D  E 
You were my best four years

Verse:
A              Gbm                  D 
I remember the drive home when the blind hope
          E                      A 
Turned to crying and screaming, "Why?"
                        Gbm 
Flowers piled up in the worst way
             D                   E 
No one knows what to say about a beautiful boy who died

Verse:
A                    Gbm 
And it's about to be Halloween
             D            E                        A 
You could be anything you wanted if you were still here
               Gbm              D 
I remember the last day when I kissed your face
  E 
I whispered in your ear

Chorus:
D                  E 
Come on baby with me
                    A      D 
We're gonna fly away from here
D                      E                          A 
 Out of this curtained room in this hospital grey
                 D 
We'll just disappear
                  E 
Come on baby with me
                   A       D 
We're gonna fly away from here
    D       E         A 
You were my best four years

- Intro part -

Bridge:
            D                E                A 
What if I'm standing in your closet trying to talk to you?
          D                E                    A 
What if I kept the hand me downs you won't grow into?
              D                   E             A 
And what if I really thought some miracle would see us through?
                D           E                D           E - once -
But what if the miracle was even getting one moment with you

Chorus:
- D -               E 
Come on baby with me
                   A       D 
We're gonna fly away from here
                  E 
Come on baby with me
                   A       D 
We're gonna fly away from here
    D       E         A 
You were my best four years

Outro:
A               Gbm                 D 
I remember your bare feet down the hallway
  E                        A 
I love you to the moon and back