Pronouns

Pronouns are words that substitute nouns and phrases.
Subject: pronouns that work as subject of the sentence
I
You
He 
She
It
We
They

Object: pronouns that receive the action of the verb
Me
You
Him
Her
It
Us
Them

Possessive: pronouns that express a possession relationship
Mine
Yours
His
Hers
Its
Ours
Theirs

Reflexive: pronoun used when subject and object are the same person or thing
Myself
Yourself
Himself
Herself
Itself
Ourselves
Yourselves
Themselves

Demonstrative: pronouns to represent a thing according to its distance
This
That
These
Those

Relative: pronouns to introduce an adjective clause
Who
Which
That
Whose
When
Where

Interrogative: pronouns that are used to make information questions
What
Which
Who
Whom

Indefinite: pronouns that substitutes a person or thing that is not known.
Something
Someone
Somebody
Anything
Anyone
Anybody
Nobody
Nothing
No one