RULE: The expression me, I is non-standard English. Use I instead.

Me, I I don't want to go.

RULE: Never begin a sentence with me.

Me I want to stay here.

RULE: Use I for the subject of a sentence or part of the subject of a sentence.

My classmates and me I were bored during the lecture.

RULE: Use me for the object of a sentence or the object of a preposition (i.e., in, on, at, for, by with), even when combined with other words.

The wind nearly blew my dog and I me into the water.
A tree nearly fell on Rex and I me as we were crossing the road.

RULE: Put others before yourself to show politeness.

I and my brother My brother and I are twins.