I am appalled at how mean you all are!, i am only 16 myself and i am great with plants so i started to grow and my first grow is doing great right now, SO KID IF YOU SEE THIS READ IT. start small because there will be smell, even one nice plant will give you about a pund, and that should be plenty. then get some of those clamp on spot light things from the hardware store, get at least three 100w cfls's per plant and put then in the clamp lights. If you have been reading a lot about it you should know generally what to do, also, cfls wont use much electricity at all they are energy saving bulbs in the first place. if your attic is ventalated the smell shouldnt be too strong, your first grow will be mostly a learning expeirience (as is mine). hope you grow some dope man! hit me up and tell me how it goes if you decide to do it. and if this seems like too much for you then just do it in the summer and you should be good.
peace.