Capo at 1st, transpose +1,(or leave like this to sing with baritones!) 
Ask if you want chord fingering help.   Note that the "Am" is really the riff more like  
just an A5 power chord, etc than strumming an Am chord. 

Intro:  Am 

 Am 
Girl, you really got me goin', you got me so I don't know what I'm doin', now 
 Am 
Girl, you really got me now, you got me so I can't sleep at night 
 Bm 
Girl, you really got me now, you got me so I don't know where I'm goin', yeah 
 Em 
Girl, you really got me now, you got me so I can't sleep at night 

 Em                                                                 D 
You really got me, (oh), you really got me, (oh), you really got me 

 Am 
Please, don't ever set me free, I only wanna be by your side 
 Am 
Please, don't ever set me free, I only wanna be by your side 
 Bm 
Girl, you really got me now, you got me so I don't know what I'm doin' 
 Em 
Oh yeah, you really got me now, you got me so I can't sleep at night 

 Em                                                                 D 
You really got me, (oh), you really got me, (oh), you really got me 

Solo:  Am C-D  Am F-G   Am 
 Am 

 Am 
Girl, you really got me goin', you got me so I don't know what I'm doin', now 
 Am 
Girl, you really got me now, you got me so I can't sleep at night 
 Bm 
Girl, you really got me now, you got me so I don't know where I'm goin', yeah 
 Em 
Girl, you really got me now, you got me so I can't sleep at night 

 Em                                                                 D 
You really got me, (oh), you really got me, (oh), you really got me 

Em         E7/#9
Oh, oh, oh