Definitely dont hide something like that from the parentals. Its destined to be a bad thing. I've waited almost three years now to grow some nuggets. Just have to wait until I move into my new place in August and then my first closet grow will begin. Just wait until you have the perfect place to do it.
Read books, read forums, definitely read forums. fill your head up with this stuff, and on your first grow youll end up really happy!