A really IMPORTANT question on acting this is my dream and iwant to fulfill it please do me a favor and help..

my dream is to become an actor, yes ive asked this question before but this time i really need help. i want to act on the big screen but i am 18 and i live in maine. because for research, every celebrity i read about, they started acting when they were a kid, or took acting lessons when they were a kid, or they never learned acting but lived in a major city so they kept auditoning and finally got a role. oits hard to watch movies now because whenever i watch it, i know that couldve been me but i have no oppurnities to show myself and its just hard to watch. all i want to know is if there are any acting schools, acting coashes or even camps, anything that can help me act, but i dont know of any in maine. i would love to go a major city but i cant auditon without expereince,so please, can someone send me a link on if theres any acting school, lessons etc. in maine or what to do in order to auditon in a mjor city like how i can get experience if i live in maine. pelase, this is all i ask4