My first grow consisted of three 17 watt grow lights from wally world and 12 Mexican brick seed in pots made out of 2 litter bottles. Your methods will change as you learn what's important to you and what your ambitions are. It's a great ride though!
Once they are about 12" you can flip to 12/12 to determine Sex then go back to 24 light or 18/6. I say 12" just so enough is developed every strain varies a little