Welcome to JREF! I'm also 14, and I started learning Japanese when I was 12. Good luck on your studies! Japanese is a very hard language to learn, and it's sooo different than English... So, don't give up, as many do!! Good luck
p.s. I wouldn't sugest asking people here to "coach" you in learning the language... You have to learn on your own (or get into a school, or get a touter or something), and use this site for questions you have or practicing ^^
がんばってね!
-Tommy