I have no clue what was the first anime I've watched since it was in 1997. I do remember that I got into anime after the war ended in Kosovo in 1999 and coming back from school to watch Pokemon, Dragon Ball, Yu-Gi-Oh and whatever else RTL 2 showed during that time. First anime that I watched in internet was Yu Yu Hakusho.
As for my first manga it's Death Note in 2006 I think. The reason I got into manga is that back in 2006 I had really bad internet and it was hard to watch Anime with crappy internet and since I liked Death Note anime a lot after somehow watching a few episodes I switched to manga. (I used to have to wait around 40mins just to fully load an anime episode, sometimes I'd open 4 episodes and leave them load all day while I was out.)