Tú, tu, te y ti?

Tú, tu, te y ti?
 

Can someone help me out with the differences between these 4? thanks!

You are special for me?

Tu erés especial para mi.

I can help you with the food.

Te puedo ayudar con la comida.

Please tell me something about you.
Porfavor dime algo sobre ti.

I hope those examples can be useful for you..

Sincerely yours.

Tú = You

Tu = Your

Te = I believe it is called a direct/indirect object pronoun. I can't explain it well, sorry!

Ti = Used in place of tú after prepositions.

Tú : Tú eres alto -- You are tall.

Tu: Tu coche es rápido -- Your car is fast

Te: Te mandé un correo electrónico -- I sent you an email

Te again: Te duelen los ojos -- Your eyes hurt (literally, the eyes hurt you)

Ti/tí: Este regalo es para tí. -- This gift is for you

As a reminder, the prepositional pronoun ti doesn't have an accent mark. This is because there isn't another word that is pronounced the same way (a homophone doesn't exist, in other words). Its "cousin" mí has an accent mark, but the homophone mi (a determiner) doesn't have an accent mark.

Those are both indirect pronouns. An example of a direct object would be

Te mato - I'll kill you.

Sure, I just wrote two different things with 'te' that came to my head.. I wasn't thinking of the two uses for the word.

And thanks for clearing that up rusty

Direct objects receive the action of the verb (directly) as in Te maté (I killed you [direct object]). Indirect objects tend to be the recipient of whatever receives the action of the verb as in Te mandé un email (I sent you an email). What I actually sent was the email (direct object) and I sent it to you (indirect object).