1 Drips are easy but a bubbler is maybe the easiest. I make my drip system for about 30 bucks for a 6 plant system. small Water pump and some plastic pipe for outdoor ponds and rainbird yard water stuff. 6 netpots and a 10 gallon tub from wally world. It pumps water from tub up to 1/4 inch lines to netpots full of hydrotron rocks.

2 Well those narc's got 3/4 pounds from my last grow of 6 plants. 3 Hit crippler, danks buds the size of large soda bottles. That sucked.

3 Most use general hydriponics 3 part. Fertilizer to help plants grow big buds. Easy to follow instructions on the bottles.

4 LST with hydro is the shit if you have time to train plants.

5 PH, 5.5 to 6.2 is best. Too low or high and nutes lockout. That means plants don't get the food they need.

Einstien also said he could never understand it all.
All the answers are here look or ask. Peace and hope this helps.