I am 17 and in a very similar situation to you and, like TexasMark, have also been using a Teach Yourself book, except I recommend the 'Beginner's Russian' for something a bit more speech based - it goes through the alphabet bit by bit along with various exercises which I found quite useful.
Good luck with your Russian!

Bonz

P.S: I can now say 'I don't understand pancakes' and 'where's the piano?'. I still can't roll my Rs, though...