im 15 too, and i grew a plant right in my room. all you gotta do is keep your room locked, if your parents go in your room regularly, then forget about that. i personally dont like growing outside, because i live in the forest, and it is hard to find light. one time i did grow outside, and the fucking deer ate 99% of it. i was very pissed. from that day forward, whenever i see a deer, i huck a rock at it.