I want to expand my anime/manga knowledge. I live and breathe Fairy Tail and love Naruto and like Indigo League and I think Goku is the fresh prince of gold hair(LOVE DBZ). I'm 11 nearly 12 and want more anime and manga. What should I watch?

If you like Fairy Tail, Naruto, and DBZ then as some mentioned already, definitely check out One Piece. You'll be in for a very long watch but it's totally worth it. You might also like Soul Eater as well. And just to name a few that I personally like here's a small list:
Yu Yu Hakusho (one of my personal all time faves)
SKET Dance
Hataraku Maou-sama!
One Punch Man
Noragami
Fullmetal Alchemist: Brotherhood
Boku no Hero Academia

OHSHC is good for your age :D
Sense you are almost 14 -v-

OHSHC is not nearly as bad as Osomatsu San, which has TONS of dirty jokes, violence, and the guys take off their clothes.

But at least it censors it ;w;

If you're a shounen lover like me, you may also like a lot of other popular action series like Bleach, Blue Exorcist, D. Gray Man, Fullmetal Alchemist/Fullmetal Alchemist: Brotherhood, Hunter x Hunter, InuYasha, Magi, My Hero Academia, Noragami, One Piece, Soul Eater, Toriko, or Yu Yu Hakusho.

1) Bleach

(bleach / naruto Shippuden / One Piece) are the 3 kings in anime world......sooo if u like Naruto Shippuden Series then u really r missing Bleach and One Piece)..
2) One Piece

3) My Hero Academia

4) One Punch Man

5) Nanatsu No Taizai (Seven Deadly Sins)

6) Boruto next generation (New Season / Series After Naruto Shippuden)

if u like sports

then Kuroko no basuke (Awesome mind blowing anime)

all of these u will like it for sure.....100% Guaranteed bcz these animes r the best of the best....he h ehe

Since you're a fan of"Fairy Tail",I would recommend you to watch"Rave Master"because it was created by the same person who created"Fairy Tail" so I'm sure that you will love it.

"Nobunagun" is SUPER COOL and "Black Lagoon" too.

"Katekyo hitman Reborn" is really interesting; even though you have to endure the first 6 chapters it is worth it!!!! (2photos)

and "HELLSING ULTIMATE" too (this last one is a little gore (a lot))

PHOTOS IN ORDER

Hmm, for someone like you who is into those kinds of anime, these should be great...

1) Fullmetal Alchemist: Brotherhood
2) Soul Eater
3) Owari no Seraph
4) Detective Conan
5) Ao no Exorcist

The picture posted is of Fullmetal Alchemist: Brotherhood, by the way.

I'm sure you will like all of these. Enjoy them! :D