Whole song is basically the same progression, with some variations here and there.
I'm not superman, I can't fly
I do my best man, just to get by.
I'm not superman, I'm just me
Regular joe in my galaxy
Every once in a while the first two chords are substituted for the barre chord version.
G Am (He also plays this sometimes.)
e|---3-------5-------5---|
B|---3-------5-------5---|
G|---4-------5-------x---|
D|---5-------5-------5---|
A|---5-------7-------x---|
E|---3---------------5---|
Every once in a while C/F is substituted for
e|---1--|
B|---1--|
G|---2--|
D|---3--|
A|---3--|
E|---1--|
This is just the basic outline of the song, I may tab it note for note if needed.