#1
Hey. I'm having some trouble reading the chords for I Need You All The Time. In the intro, and closer down to the bottom, its just got like 1/5 1/2 1/3 1/3 etc. What does that mean and how do I play it? Also, theres a few times in there where it says as the chord "G (add A)" how do I do that?

p.s. Got any easy ways to tell the strumming pattern in songs?
#2
I believe those numbers mean that you have to play the notes on the first string (high E), on
the fifth, second and third fret.

G(add A) means probably just Gadd9, which you can play for example like this:
E-5
B-3
G-4
D-5
A-X
E-X