AC/DC was my first concert. I was 16. I still to this day can't believe my parents let me go.
My first concert was ELP in Philly. I was 18 and Philly was 4 hours away. Didn't get home till close to 5:00am. They were set up on a revolving stage so that everyone was able to see them face on at different times. I saw Yes there a short time later with the came set up. 2 great shows!