C64 Basic, Yggdrasil Linux. I wanted to install Minix, in the pre-Linux times, but it was beyond my abilities

The first one I remember using was good old Windows 98.

Macintosh System 7. Then I moved to Windows 98, which was the style at the time.

First OS for me would be Windows XP.

First Linux I've tried using could technically be whatever version of Android was on my mom's Droid phone.

First desktop Linux would be some version of Ubuntu around 2014-2015

First time --> Basic (???)(Amstrad CPC464) --> MS DOS Windows --> 3.11 (yes, 3.11)-> W95 -> W98 -> Win Me -> Win XP -> Win 7 -> Win 10 (only for some games) GNU/Linux --> (2013) Mint -> Debian ->Manjaro (2-3 days) -> POPos (2-3 days) -> Mint -> Nobara --> Fedora (last Year)

Apple DOS Edit: Apple ProDOS
First Linux, I'm not sure anymore. Whatever was prevalent in the mid 2000s.

Windows XP, but it was during its ending phase, so I think it really was Vista. My first Linux distro was Kali Linux because I wanted to be a cool hacker when I was a kid. I never got too much into it then, though. I then found Ubuntu, and strangely enough, I switched to Trisquel, which wasn't too bad. I decided to go all the way and buy a T400 with Libreboot/Trisquel when I was about 15 years old and used that as my second computer for about two years. I learned how to start installing Libreboot myself. It was a really fun experience (not really, there was a lot of quitting and crying), but it taught me more about GNU and the entire philosophy. I started to learn more about GNU and RMS when I was 18. Now I'm 20 and use Arch. The end.

My first OS was DOS 5.0, I switched to linux with Fedora core 6

mint->chromeOs->kali->windows->arch->openbsd->arch->nix

Red Hat 7