Either:
Kasurami said:
A Pokemon manga when I was incredibly young.
First proper comic would be Watchmen though. I'm just so original.
or
badgersprite said:
Probably a Simpsons comic. I used to read those a lot when I was younger.
Probably the latter (called "Electric Pikachu Boogaloo"), since with other comics I was like "Oh hay, look at the pwetty pikshurs [reeding is dum]". Yeah, I was a pretty stupid kid. But actually, I think Electric Pikachu Boogaloo was pretty good. Better, at least, than Pokemon Adventure, which was strangely popular for some reason. I'd love to get back into those if I could.
By the time I got into graphic novels, I was already out of high school. At that point, it was either Watchmen or The Killing Joke that set the standard for me.