i cant do squats and dead-lifts because it puts weight on my back and seeing as im 16 my spine hasn't fused yet
no my gym is small so it doesn't have classes at all
Thats a myth my amigo. Whoever told you that is full of shit. Other myths include the idea that squatting high is better for your knees than full squatting, and that heavy lifting will make you look like a powerlifter/strongman.
I would be way further now if I had started training propery at your age.
Without classes, you will just have to watch a lot of videos, read a lot of articles and videtape your own form to make sure it is ok. It's what I had to do.