How innocent is Othello?

The opposite of guilty.

Othello is a Moor, which is to say an African, but it is not clear whether or not he was actually born in Africa. He does say that he was a soldier since he was seven years old, and that he had...

the phrase is innocent of not innocent for

Othello is a play, so you should not think of it as a book. Go and watch it, either at a theatre or on film, if you want to understand it. Learning how to understand plays by just reading the script...