Read the Feq Q&A section on this site, High times site, & most major seed companies has good growing advice. I've been studying the shit for 2 years, still learning. Do your homework first, the shit can get as complicated as you allow it, ie- what kind of grow, Hydro or soil, in or outside, what kind of seeds, how big is your grow room, etc. I dropped a couple grand into growing so far. Read about light, -HPS & MH, track lighting maybe, ebb & flow, ventilation, fans, timers mylar, the shit goes on forever.