What is a pronoun?
It’s a word that replaces a person, animal, or thing, in a sentence.
There are a few different pronouns in Spanish; Subject Pronouns take the place of the subject of the sentence when it’s not there. What is the subject of a sentence? It’s the person/animal/thing performing the action of the verb.
Personal or Subject Pronouns in Spanish in 1 Step:

Be aware that many times in Spanish we don’t need the personal/subject pronouns as in English, the conjugated verb reveals who performs the action…
Examples:
Hola, yo soy Virginia ( Soy Virginia)
Hi, I am Virginia
Tú eres mi amigo (Eres mi amigo)
You are my friend
Él trabaja mucho
He works a lot
Ella camina todos los días
She walks everyday
Ud. es el jefe
You are the boss
Nosotros queremos hablar (Queremos hablar)
We want to talk (all males or mixed gender)
Nosotras queremos hablar (Queremos hablar)
We want to talk (all females)
Vosotros entráis rápido (Entráis rápido)
You enter fast (all males or mixed gender)
Vosotras entráis rápido (Entráis rápido)
You enter fast (all females)
Ustedes pueden corer (Pueden corer)
You all can run
Ellos ganan la carrera
They win the game (all males or mixed gender)
Ellas ganan la carrera
They win the game (all females)