Hmm the 3 basic animes~ Did you just begin watching anime a while ago?

Anyway seems you are into shounen so~

Soul Eater
Rurouni Kenshin
D-Gray man
Claymore
Hunter x Hunter
Death note
Code Geass

Also recommend non-shounen.

Elfen lied
Black lagoon



All of these are pretty mainstream anime. So cant go really wrong there.