The first knife I was given must have been the demo knife I vaguely remember having as a kid. I don't really remember how I got it, but is doubt that I could have paid for it, and I hope I didn't steal it, so I'm gonna have to go with "given".
The first knife I can clearly remember being given was a Browning liner lock, that came in bubble pack along with an LED headlamp. My wife was really giving me the headlamp; the knife just happened to come with the deal. Not much of a knife, but it was my first experience with one handed openers, and it got me thinking about knives. She has since given me a Griptilian, a USMC Kabar, a SOG Spec Elite, and most recently a Case seahorse whittler.
I have given lots of knives to my wife, kids and grandson, usually for Xmas or a birthday, but sometimes just for the heck of it, but I do not consider gifts to relatives to be "giving away" a knife. I gave away a Case peanut to my buddy and Sturmey-Archer guru who converted a 4-speed Dynahub to five speeds, laced it into a wheel, and helped me install it in my Raleigh DL1. The other knife I gave away was a Mora 612 on this forum.