My best advice is to get some Miracle grow soil it is cheap and basic ,go natural for the 1st 3 weeks wit just soil n water
then youl prolly want really small amounts of fert for youre vegetation im talking ..say if u buy miracle grow fert and it says 1 tablespoon a gallon of water,i would reduce it to an eighth of that for the start of vegetation only giving it the nutes once a week till preflower then a little more.Its just a matter of starting small but youll more than likely be using chemical nutes cuzz the organic is pricey and not always ez to get.But the thing is with chemical nutes you have to be careful withem cuzz they do burn plants quicker,smaller amounts than what they suggest in the fert instructions when it comes to chemy's.It all depends on what you wanna do really.
Hope it dont seem to complicated.
GL wit yur grow.