Hello, I'm another newb here. Went from a 2x2 and a small LED to engulfing a whole room with about 2400w. Mostly LED, with some occasional HID or HPS. Right now I have 6 different strains growing ... looking forward to getting better every time.
To expand, I've grown Purple Kush, White Widow, White Cookies, Crowne Royal and Candy Cane auto (all from Crop King seeds), as well as Utopia Haze from Barney's. First run was the widow and kush - it was horrifying. Working in a single 2x2 with a full spectrum LED. Learned a lot of lessons fast (PH pen calibration matters, don't believe the feeding chart from the manufacturer, 'dark' means really dark, and much more.) By the second run I had moved up to two larger tents (so 3 tents in all), and added a whole lot of light. Took control of the feeding schedule and growing environment, and learned to listen to the plants. It was a success(ish), yielding 1.5 lbs of respectable medicine. The third run was a massive improvement on the second, with significantly better quality).
Currently (4th run) I have two tents in flower, (4 x Utopia Haze and 4 X Quantum Kush) and with about a month to go things are looking great. For future grows - in addition to more Quantums, I have seeds for Gorilla Dawg, Dog Cage, Green Crack, Chocolate Orange, Darkstar and Laughing Pineapple Express, which means I expect to be doing this for quite a while.
I'm growing in soil (HP promix) and swear by Hercules pots. From the start I've been using Blue Planet nutrients and they have been excellent. I'm contemplating a switch to Green Planet only because as a Canadian the shipping and exchange is making BP very costly.