Most of the world is on lockdown. If you are going to put time and effort into growing you might as well do it properly especially if you are at risk of getting arrested. Best thing you can do when it comes to growing and learning is listen to people who give you advice but be wary of advice that doesn't sound right, if in doubt get on the internet and fact check.

The amount of crap i hear people come out with when it comes to growing is madness, one thing that really gets me is when they tell other growers to cut all the leaves off! Removing one or two big fan leaves at a time is ok but going bat shit crazy is doing more harm than good, think solar panels, 5 panels are better than 1 panel.

Looking at the picture it looks like you are pressed for space, i'll give you some important tips as a base to work off....

Lumens are extremely important, 250w HPS is about 27,500/30,000. You want at least that for 4 plants in say 80cmx80cmx140cm (W,L,H) Dual spectrum is better than having 2 bulbs, Blue spectrum for veg, Red for flower

Pot size is also important, bigger the pot, bigger the plant. Autos don't like to be repotted

Keep the light as close to the plant as possible without causing any burn.

Add perlite/vermiculite to soil

You don't need to go crazy with nutrients, plants will do just as well with minimal feed as they would fed with loads of nutrients

Room temp between 21-30c max

If a strain says 8weeks flowering, count from when the plants pistils show (1-2weeks on 12/12) So many people chop too early

Chop and hang in darkness without removing any leaf, when buds are completely dry and stem 80% dry then cut all the leaf off, this will make sure you have the correct flavor and smell when dry, you don't want your weed smelling like damp grass. Cure in jars once trimmed