my first three

After gettin tired of payin these outrageous prices for some decent smoke, Im attempting to do this all by myself. I have no job and no real form of income, but I have been able to piece together about five plant lights (2 floros and three "plant lights") and "build" myself a grow box. I planted in soil, using a mixture of perlite, peat and Miracle grow to make up my grow medium, and I;m fertilizing iusing some Miracle grow plant food. can't afford any different fert, 20 bucks is a fat sack and lights are way too expensive, especially for only 5 or 6 plants that I alone am gonna smoke up. anyway. Grow time's been just over two months now and I'm just turning getting to 12-12 mark as they are just now over 26 inches tall. What I wanna know is how long before I can sex them and how much longer after that can I look for buds? One is definately female. the other I cant tell, and the seedling well....they are all on 12 -12 now. even the seedling cuz when I began I had 13 plants and all the seedlings died excep one (all from bagseed too) and I was told it was cuz they got no rest. I need help knowing what to do next. this is my first time with the green thumb and I'm looking to learn all I can so as to be able to one day produce the yields of quality I come to expect after 22 years of indulging. Quantity is not an issue with me, I want the finest quality. a Good burning smoke with a smooth taste, great smell and body lock high. Can someone please help me!!!!!