I grow autos on a constant basis somewhere. They are a blast to mess with, so I've always got about 5-10 going at all times. There's two ways I highly recommend approaching them, coming from photo only background. I would recommend attaining some info on the strain you want to or are growing. As I think it was mentioned, they are touchy, or I should say, they can be touchy. What I mean in this statement specifically is that some love being topped and some definitely do not. Most solid auto breeders are putting out stable strains at this point, so you are able to train and top without fear much easier than in the past. But still, to very high degree, some left alone do so much better in regards to topping. Training, I recommend third to fourth leaf set, getting started. Training seems to get you the best (consistently) results. You just get that auxin all scrambled up, and her undercarriage should push right on up on most strains, without the need to top. Leaf tuck when possible rather than prune, but thats probably more a personal thing. I don't lollipop my autos, but I have been known to remove the bottom two branches usually. But again, there is so much variety out there as far as, plant characteristics go, and packed into a shortened time frame. I would say, my best results have come from being on my A game with ph and nutrients more so than any pruning or training is concerned. I have dropped down in pot size over the years with them as well. I was and still do love the 3 gal fabrics. With a decent autoflower, you're in chill mode, so to keep things fun etc I dropped to a two gallon. That's a great size if you want to maximize floor space, and keeps you on your toes with your grow. Autos are a ton of fun, with your photo background and a few little things like I suggested, I'd say play around and see what happens. Just kind of keep in your head that they're always in flower and you can't go wrong. Good mindset to keep, at least it is for me. Anyway, "there's some more of Saro's ramblings again.
It's best just to let him talk, hell burn himself out." hahaha. But feel free to look me up any time you have a question, I will always try to make time to talk cannabis with someone. Be well, be safe and take care of your neighbor.