#1
Im trying to learn the song Dear Maria Count Me In - All Time Low and im having problems playing it because i dont know how to mute the D string.

e|-----------------------------------------------------------------------------------------------|
B|-----------------------------------------------------------------------------------------------|
G|6/7-11-12-11-9-7---11-12-11-12-14---11-12--11-9-7-9-14~--------------------|
D|-----------------------------------------------------------------------------------------------|
A|4/5-9--10--9-7-5---9--10--9-10-12---9--10--9--7-5-7-12~------------------------|
D|-----------------------------------------------------------------------------------------------|

I was wondering if someone could tell me whats the technique i should be doing to be able to mute just that one string
#2
use the finger that's playing the note on the A string and let it rest on the middle D string.
#3
Use your 1st finger for the lower note, 3rd finger for the higher note, and 2nd finger to mute the string.
#4
what fingers do you play the notes with?

I use my index and ring fingers for octaves like that, usually..

(for the first chord), I press down on the 4th fret with almost the tip of my index finger, and lightly touch the d string at the 4th fret.

touch the string hard enough that it mutes it, but not so hard that you're fretting the note
#5
i think the posters above me laid it down pretty well. in time it'll become natural to mute that string when playing octaves.
#6
alright thanks all of you helped me out and i think ive got it now