Hello, This is my first post here, and some of my first steps into gardening, or so I hope. I've wanted to garden for a long time now, but have never had the yard for it. aside from one or two herbs planted in pots in the kitchen I haven't had much experience. But now I still may not have a yard, but I have a basement!! I've done some research and have seen many set-ups in a basement for growing, using fluorescent white light for grow lights, and some times some added heat source. So this all gave me an idea, why not take my unused basement and literately build a green house in the middle of my basement, with grow lights, plastic walls and all to hold in humidity and heat. A few, mostly basic questions comes to my mind while I await some greenhouse gardening books I ordered, to come in. 1. Can I grow and produce crop year-round with this method, i.e. a constantly producing tomato plant? 2. Will plastic walls to hold in humidity help? Alot of basements set-ups I've seen don't have any plastic, just grow lights. 3. Will all plants thrive well in a high humidity 70f degree environment, or should I plant plants that prefer cooler dryer temperature outside the enclosed green house. I only ask cause it seems like every plant I ever see is in some sort of greenhouse. 4. Soil? I'm pretty sure this will be covered in some depth in the books coming, but if there is anything special I should consider given the environment im looking at. And of course any other thoughts that you feel may be helpful. Thanks, Roger B.