I started back in 8th grade, so around 2003? My friend showed me the GW site, and gave me a couple of novels. I was enthralled in the setting, and then began looking into the hobby.
My first army was Necrons, and I earned a lot of awards with them, I still remember when I brought Flayed Ones to a tourny, and they actually rocked the house. Got Best Army from that event, but eventually I moved onto Chaos, as well as dabbled in other armies. Though a bit over a year ago, someone stole my Necron army. Yup, my first army was stolen years down the road.
Though I think I'll be able to trade the leftover bugs from my newest army project for some new Necrons, and then with the new codex out in the next fifteen years, I'll make a return.