Originally Posted by: maggiorThe difference between a major chord and a minor chord is that in a minor chord, you flat the third.
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You mean that in a minor chord you always flat the third string or just in the A chords?

[QUOTE=maggior]
Major and minor chords are made up of 3 notes. Major chords are made up of the root note (the tonic),

And this can be in any of the 3 strings, correct?

[QUOTE=maggior]
3rd, and 5th. So, an A major chord is made up of A, C#, and E. If you look at the A major chord shape, you will see it is made up of only these notes.

To make it a minor chord, you take the third (C# in this case) and flat it. In terms of the guitar, this means the note is played a fret lower. So rather than fretting the B string on the second fret, it is fretted on the first fret, giving you a C note.
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So I believe that in each chord the flattened string can be any, isn't it?

Thank you very much for your reply! ;)