IPT was my first one and still use it all the time

That must've been about 9 yrs ago

demonoid and then ipt. So far no new ones yet.

my first tracker is gfxpeers.net

gfxpeers.net its a cg related tracker

scene underground was my first, but is now closed

My first private tracker is TorrentDay.

I believe my first was demonoid waaaaay back in the day (Probably 10 years ago)

Years ago I got on TL as my first private tracker and boy was I in for a rude awakening when I DL a pack right away and tanked my ratio. I learned fast how to manage ratio and how to cross-seed. Still on TL to this day.

Demonoid if it counts. If not, TorrentLeech, and I still use it today

My first was tvtorrents.com few years ago now, but just started again with private trackers recently with ICETorrents.