You're better off finding basic gardening guides than asking questions here.
https://www.cocoforcannabis.com/toc/#growing-cannabis
https://www.cocoforcannabis.com/community/photons_corner/
Soilless growing is the primary method they discus, but many of the concepts are similar or the same. Irrigation is slightly different with soil - runoff should be limited, but otherwise the same concepts apply, for example. Training, pruning, potting up etc will all be the same. How to fertilize and a couple nuances of how to irrigate will be different for soil growers.
https://en.
wikipedia.org/wiki/Daily_light_integral
--The gist of light.. don't need to memorize the math, but knowing how hours and size of canopy are proportional to dli is helpful. Light may be a wave, but in this context think of it as a particle... easier to understand that way. Or, consider a parallel of calculating distance. A rate of miles per hour multiple by hours gives distance... a rate of umol/s PAR produced by a light multiplied by time gives the total amount of energy absorbed by the plant... energy is a currency. Now, DLI also makes comparing different sized gardens and different hours of operation apples-to-apples, so it's slightly more complicated than the distance traveled comparison. A 4x4 with 35 DLI and a 4x8 garden with 35 DLI should expect a very similar yeild per sq ft, all other factors reamining the same ("ceteris paribus"). In reality, home gardens are rarely so precisely controlled, but true nonetheless.
Anything you read that is over-complicated or over-sophisticated is most likely masturbatorial in nature. It makes people feel like they are doing something special and will have special outcomes that nobody else has figured out. There is a strong motivation out there to project all sorts of nonsense onto this plant and how to grow it. The reality is that growing a healthy plant is pretty simple stuff and there's no magic bullet or 'techinique' that isn't widely known and used on other plants for 10s of thousands of years. The whacky stuff more often hinders growing healthy plant than helps. It's whimsical in nature most times.
Lots of strongly held beliefs sorround this hobby, and many of those don't have a lick of evidence to support them, nor has anyone ever put in the effort to prove anything. Some anecdotes can work well, but quite often anecdote contradicts existing knowledge and are total nonsense.
Try to focus on the simple stuff, initially, which all can be dialed in through observing the growth in front of you. You get verification from the plant - which you can trust. Get the light right, practice good watering habits, adjust fertilization to consistently have healthy plants deep into flower regardless of how many strains grown at once. Once you do that, continue to grow enough variety to get a good idea of real genetic diversity not variation caused by esoteric and less-than-ideal methods. At that point you can try the wild and crazy stuff or things of interest and better compare results with less fog of war. You'll find most of the promises are empty.
People have been growing plants for a while now.. nothing magical about them. Can't circumvent a deterministic reality.
things to verify methods
grams/sq ft results... 50-70g/sq ft is a ceiling for median to high yielding plants. Growing from seed comes with a lot more variance grow to grow.
Node spacing helps guide light intensity. Stretching is bad, but so is giving too much. Too much will eventually stunt a plant... look all droopy etc. Slightly too much light won't always cause leaf damage before you see other symptoms - like the droop or unusually tight nodes
shit rarely happens over night... More often than you realize, the cause of a problem can take weeks or months to notice. It's very easy to attribute the wrong cause to what you see, so if what you do doesnt consistently fix the problem, highly likely you are wrong about the cause of the problem to start.
fertiization is a matter of every decision since day one. feeding heavily in vege phase can require drastically different needs in flower than someone that did not feed so heavily in vege phase. Add in all sorts of unknowns with soil products and related fertilizers requiring mircobes to break shit down into something plant-availble and it's pretty damn hard to give a one-size-fits-all suggestion.... Find well-priced products and stick with them to gain familiarity. don't overpay for fertilizer... the ingerdients are a pool of commodities. At this point in history, there are no magical ingerdients that no other manufaturer knows about, lol. Ther's no reason for a 1L bottle to cost 200 dollars, bwahaha. And, you don't need 10-20 products to grow good plants.
I have 4 parts to my fertilizer and it can adjust to cover all needs seed to harvest. Heck, one of those products is exactly the same but with no nitrogen (0-12-26 and 5-12-26 + some secondary and trace elements in each)... i used to use 3 products and those results were fine too. Four cents per gallon mixed... there are marijuana brands that mimic this similar formula and chage 5-10 times more. Premium prices for smoke-and-mirrors is common. A ton of people equate the amount of money they spend on quality of outcome and vendors are more than happy to cater to such people.
i hesitated to give more detail like this before, because there are a ton of fake accounts and weird shit happening on this site involving AI. it's not your fault, but also understand nobody likes to waste their time, either.
There have been scripts in the past that automated asking questions -- one such script broke a few years ago and spammed a few thousand questions... you can tell when a script breaks because you see html tags and such in the text for no reason, lol. Someone missed a "" or semicolon in the code or whatever LOL, so you get fragments of mark-up language and code in the text input boxes for questions. There have been scripts that automate comments and 'likes,' too... avoid the marketing bros and the bro science.. find some people to chat with that dont insult you, and there can be good things that come from this website.
it doesn't take a perfect plant to have an okay outcome, but obviously you want to work toward growing consistently healthy plants. consistency is really what you gain by growing with better methods. Sure the ceiling may rise a little, but the biggest thing is the floor rises significantly. the only way to consistently have mammoth yields is to use clones that have the traits for such potential outcomes. Quality and yield are 2 different things... quality is almost 100% about the genetics. There are no products that 'boost thc 50%' etc... anything making such claims is almost assuredly lying to you or themselves. Method impacts yield much, much more than any impact on quality and assumes a healthy plant context as a minimum.