What is the difference between might, may, could??? Is confused, can you give examples please, thaaaankssssss

My big family Hello, my name is Rayniery and having a big family, I live with my mother and two sisters, Their names are Any and Teresa, I have a step-brother of my mother, his name is Manuel. My mother and my father are separed and my father has others children, a baby and a daughter, oooh and a other, his name is Antony and he is 29 years old. My step brother Manuel gets married with licelot and they have their first baby, is a girl and her name is Elisha, and this is my family, what do you think???