"Me" is used when an action is hapenning on the subject I or when the subject I. "Me" reffers to I, and you can you use "yo me" or just "me" and is correct. ex: Me llamo.... = My name is....., Me leí un libro = I read a book, yo me quemé = I burned, ¿Me siento? = Do I sit down? "Mi" is used when you want to say that something is yours, in english you can translate with My. ex: Mi esposa = my wife, Mi perro = my dog. "Tu" is just you in english, but is used to say that something is the property of the subject you. ex= tu libro = your book, tus cosas= your things, tus miedos= your fears. "Te" is used when an action is happening on the subject you. it have the same uses that "Me". Ex: Te comiste(past of comer) una galleta = you ate a cookie, yo te lo dije = I told you, ¿Te sientes bien? = Do you feel ok?

"Me" could be translated as an "it" for the subject "yo" (i) it is also used as an english "me" in some cases. Me gusta=I like it Me enferma=It makes me sick Me duele=It hurts meTe gusta=You like it Le gusta=He or she likes it Nos gusta=We like it Les gusta=they like it Mí is the object for the personal pronoun "yo", like a "me" in english para mí=for me it can be used as a possesive too the only difference is that the possesive is stress less :mi perro=my dog mi casa=my house Tú is the personal pronoun "you", the informal one, mainly used with kids,friends and people you meet in the web, it is also used as a possesive:tu perro=your dog tu madre=your mother the object for this subject is "ti": para ti=for you. "Te" follows the same rule as "me" but it is used with the personal pronoun "tú"(you) Te gusta=You like it Te duele=It hurts you .

It's used differently: yo/tu/él/ella/nosotros/vosotros/ellos/ellas/usted/ustedes. These are used to interpret a person, like in, "Yo soy un hombre" (I am a man) "Tu eres mi hermano" (You are my brother) "Ellos son altos" (They are tall) It's like in dutch, ik/jij/zij ...... Except that in spanish it's not obligatory, you can say, "soy un hombre" "eres mi hermano" "son altos" mi/ti/su/nuestro/vuestro/su ..., are used to describe something that belongs to the person, like in "mi hermano" (my brother) "su casa" (his/her house) "Nuestra casa" (our house) Like in dutch, mijn/jouw/zijn/haar/hun .... And then you have me/te/se/nos/os/se, which is used to describe an action, it goes with a verb, like in, "Me levanto" (I am getting up) "Te quiero" (I want you) "Te veo" (I see you) "Se matan" (they are killing themselves) "Os gusta" (he/she/it pleases them)