@Orcanic Hey bud, I'm just finishing up my 1st auto grow now. My buds came out okay (a mix of LSD, GSC, AK x Crit Mass) though I don't have any final weights yet as they still drying. Some things I found handy along the way:
I'd also heard that autos don't respond well to HST but I experimented anyways by topping and FIMming 1 of each just to see how they turned out. They were stunted for sure, and never produced as much as most of the normal ones that were not topped or FIMmed. Well, on those 2 phenos on these strains it wasn't worth it, at least. The topped one looked worse than the FIMmed one. Maybe on other strains it works better, IDK... I did however defoliate the plants a few times throughout the grow to keep the bottom tidy and clear for lower RH and better airflow (and easier watering). Also I removed any leaves that never looked healthy. All in all I'd say I removed the branches up to the 6th or 7th node, but not all at once, maybe 3 or 4 sittings. This is also called lollipopping.
Also on training, I gently tucked the fan leaves under the bud sites so that buds are more exposed to the light. It's kind of like training but not quite. My plants responded well to this.
If you want the bottom branches to grow taller, don't cut the corresponding fan leaf below it. This helps create an even canopy.
All of mine were in 5L fabric pots, never transplanted. Seeds went straight into pots. Despite the small pots the yields per plant seem pretty decent. I must say it's a pleasure to handle them in the smaller pots, makes many things easier
At the end I got fungus gnats, as is so common. It was a bummer, but lucky I harvested before they fucked things up. I hear adding cinnamon to your medium in the beginning stops them from ever laying eggs. to begin with. @DamDave says he's had good success with this. I'll be doing this next time
Other than that keep your temps and RH on point throughout the various stages. Try not to let them fluctuate if possible. The more stable the better. Never let it get hotter than 26 deg C as it damages terpenes. Try keep it at 20 deg or close during flower and 45% RH if you can. Remember the 48 hrs dark at the end.
I'm still learning. Some might disagree with a few of these methods but they seemed to help me. Happy growing man :)
Below pics of autos, top 2 bottom:
LSD25, GSC, AK x Critical Mass, GSC, AK x Crit Mass