For me, I was 16 at my boyfriends grandmas house in the basement watching LOTR. he kinda slowly moved into it then he shoved his tongue down my throat. went with it for a second and pulled away because it was just too gross. I learned quickly though.
Revealing secret, once when I was 6 i touched the tip of my tongue to the tip of my brothers tongue to see what it would feel like. I have never been the same