Search in the Forums for Closet Growing Plants, with a 600 w HPS you can grow 9-12 plants, averaging around 3 to 4 feet no problem, and with adding SOG techniques, LST (low stress training) and SCROGs you can get a very decent yield, utilize the space you have, if the walls are white, keep em that way, if not, install some emergency blankets on the walls and ceilings (mylar, not that other shit, its very cheap). Install some kind of ventilation to bring in fresh air and push out the old air for good circulation and to keep your ballasts and bulbs cool, with that you can be growing in no time just start off with bag seed for a few test grows to see how it goes and then go on Nirvana or Attitude Seed bank and buy some Feminized or Autoflowering seeds (seeds that flower in about 3 or 4 weeks no matter the light schedule you give them, these are good for beginners like us. You can usually get 5 seeds of some dank from Nirvana for around $35 bucks, plus shipping, and they use stealth shipping so your wife wouldnt even know what it is even if you open it in front of her, the seeds will be hidden inside the stealth item. Not going to tell any of their secrets, others already have blabbed about how Nirvana stealth ships their seeds and shit, that is for the hush hush you know what I mean, we don't want to lose a good company like them because of some dumbasses.