(Part I) English and Spanish structural differences (personal pronouns and two verbs "To be"):
If you are an English native speaker you will find that there are a lot of features that make Spanish (and any other romance language) different from English.
Perhaps the most basic is a second formal personal pronoun for the second singular person and two forms for the informal you, and a second formal personal pronoun for the second plural person and just one form to the informal you that’s only used in Spain.
I Yo
You Tú/Vos/Usted
He Él
She Ella
It -------
We Nosotros (mas) / Nosotras (fem)
You Vosotros (mas) / Vosotras (fem) / Ustedes
They Ellos (mas) / Ellas (fem)
Then we have two forms for the verb “to be”, one to indicate lasting features or a way of being (ser) and the other to indicate a temporary location or a temporary state (estar).
I am Sophie = Yo soy Sofìa. (Ser)
I am in London = Yo estoy en Londres. (Estar)
I am tall = Yo soy alto. (Ser)
I am tired = Estoy cansado. (Estar)