My first non-family PC was a Acer netbook with Linpus [Lite] Linux. I was 12, so my first priority was trying to get Rollercoaster Tycoon to work. Eventually I realized how silly that prospect was and instead managed to install Windows XP via a bootable USB. I used XP for a while until Vista came out, and then I gave Linux Mint a try and really liked it. These days I'm using NixOS and Fedora.