It isn't that hard to understand the theory of "I" and "me". "I" represents an individual and that reflects your true self and your thoughts like "I hate to study!", "I must give that ***** a tight slap right on her face!", "Please let me die!". Ha. This is "I".

As for "me", the proccessed thoughts will turn out to be something like this, "I have to study because I need the qualification to survive!", "I can't hit that girl as that will land me in the jail!", "I cannnot die because my parents will be devastated!".

Hee. =) Simply the "me" and "I".