If no one in your family is in the military than you don't have any relative majors... UGH! My guitar playing is better than my humor, I promise!
The way the scales/modes all fit together is really pretty simple. It all springs from the major scale... if you know that one scale you know all the rest.
First mode = major scale (Ionian).
If you play the major scale starting and finishing on the second note then you have just played Dorian, the second mode.
Start on the third and it's Phyrgian.
Fourth = Lydian, Fifth = Mixolydian, Sixth = Aeolian (the Minor scale), Seventh = Locrian.
So if you were playing a minor scale you are really starting and stopping on the 6th note in the major scale you are in.