Ive also only just started growing autos...
They respond well to LST if you start early, between day 14 and 21.
They dont like as much water at all, so i let the pot really really dry out and get light before watering.
They might not tolerate as much N as photos, but dont make your soil to light. I use reammended FF premium, with no need to feed the soil for the first month.
Plant 2 or 3 autos in a 40l if you want to maximize yield for that volume. Mine are in 15l and they are a pretty decent size, between 60-100cm.
Otherwise im still on that same learning curve right now