No you are not dumb, just less experienced at one thing. We were all new to this at one time or another. I never have any expectations as I’m always screwing around with my grows, but even a few grams of your own smoke makes the whole thing worthwhile.
Now, as to your questions:
With photos you can LST, HST, Top, mainline, just about anything you want. That’s what I love about them. With autos I have done all kinds of training, but I haven’t done any in a scrog yet. Here is someone’s grow that I have been following that is scrogging autoflowers. I think you will find it an interesting read. It’s
@Terra Firma first scrog and it is shaping up nicely.
https://www.autoflower.org/threads/4-brooklyn-sunrise-in-scrog-with-autopots-cobs.67270/
My area is only 3x3 and it has keeps me stoned with no less than 3 strains available at anytime for the last 3 years. So it doesn’t take a lot of space to grow some primo weed.
This is the netting I use on my outdoor scrog and is considered trellis netting.
Amazon product ASIN B00CJJ7WV0/
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If you string your own scrog I do recommend you purchase a good quality mason twine so you don’t get moldy line.
Anything else just ask.