>>26898971993, I was 11, turning 12
My dad had just upgraded to a super awesome automatic Nikon Point & Shoot Zoom camera, and I "inherited" his old Pentax ME, with nifty-fifty, macro-teleconverter and a vivitar 70-210
"turn the ring until the two planes align"
"turn the clicking ring until the red dot is at 125 or higher"
I kind of managed! Even though half my shots were blurry shit regardless, probably because I probably ignored the split prism and just turned the ring until everything looked ok in the VF.