A personal pronoun has person. It can be first, second, or third person; see all the forms here. Person is how you know whether a given pronoun is referring to the speaker, the one spoken to, or the one spoken of. video
first person is used when referring to the speaker (I, me, we, us);
second person is used when referring to the one spoken to (you, your); and
third person is used when referring to the one spoken of (he, she, it, they, them, any noun, etc.).
See all the forms here. Study chapter 11 and chapter 12 in BBG.
Personal pronouns in Hebrew usually take the form of a pronominal suffix. Some Hebrew pronouns are free morphemes; see here. See all the forms here.