Think the first I ever heard of Touhou was "Drunk as I Like" in some tf2 gmod vid. After that I'd start watching YTPMVs, MADs and other such videos (Prismriver Sisters on Drugs lives rent free in my head to this day), until the day I caved in and decided to play the first two pc98 games. A bad idea that delayed my entry for about a year until I tried again with EoSD and went from there. And now we're here.
(love pc98 now but it's definitely not a good starting point)