who trians anakin?

who trains him

obi wan or yoda?
luke wasnt really trained by obi wan he was taught by obi wan, will it be the same for anakin?

Obi-Wan will be teaching and training Anakin, then I'm sure Sidious will take over, but that will happen in Ep3.

AFAIK, Yoda won't have anything to do with his training.