Part-2
aeolian as a position within the minor scale, and within the Major scale

aeolian is the 1st mode of the minor scale
aeolian is the 6th mode of the Major scale

if playing in the Key of Am, the 1st note (root) is A
if playing in the Key of C, the 6th note (rel minor) is A http://guitarzonerocks.com/attachment/47