Surely you think that you are more than clear that the HE is for the masculine, the SHE for feminine, and the IT for things and animals... Well no. I'm sorry to spoil the party, but there's more chicha there. And it's fascinating.
Come and Read.
pronouns
Personal (Subject) Pronouns in English
Theory and practice on Subject Pronouns in English. And even if you think they have no mystery, a review never hurts. Yeah!