So nostalgic - my very first system was SCO UNIX 3.2 v4.2, and then FreeBSD 1.1.5.1. I had a few happy moments with Dec OSF/1 and some fun with AIX on RS/6000. All these moments will be lost in time, like tears in a rain, so to speak.)
My first exposure to *nix operating systems was when I was a teenager. We had a CompUSA store I was vising with my father, when I convinced him to buy a box with a devil[1] on the front cover.
I took home the box that said 'FreeBSD', popped in the cd(s) and installed, reading the giant manual(s) that came with the discs along the way. I was horrified when I finally was finished, rebooted and was stuck at '$'. Having no real idea what I was doing, I had destroyed my windows installation, and the only way I knew to continue was to keep reading the manuals. My career started right here.
(I believe it was FreeBSD ~4.2, but can't seem to locate a picture of the boxed version.)