Your first concert was to see who and when?

I saw local bands like MC5, Iguanas (Iggy Pop's first band, my sister dating bass player), Sunday Funnies, Mitch Ryder, others I'm forgetting. This Ann Arbor, junior, high school days, lots of free concerts in the area. First paid big venue concert was Alice Cooper at Cobo Arena, Detroit, friend's mother transported us and attended concert. 

Deep Purple , Fletwood Mac, Rory Gallagher at Selland Arena April , 4 1973. 

Zombies, 'She's not There', 1966, Burlington, VT

Slade live in Cardiff 1973, 9 years old probably still the best concert I've ever seen.

Fleetwood Mac at 1969 the Gardens Auditorium in Vancouver, BC.

The original band with Fleetwood, McVie, Danny Kirwan, Jeremy Spencer and Peter Green. 

The Beatles @ Dodger Stadium 8,28.66...

Kiss and Cheap Trick 14yo Spokane Veterans Memorial Arena. August 11, 1977.  First time ever seeing people smoking weed. 

KISS and John Cougar Mellencamp.  I think Fastway also played.  Probably 1978 to 1979.  In Omaha. 

Beach Boys, Chicago, and Elton John, 1975 at Hughes Stadium in Fort Collins, CO