This is your first grow. Keep it simple and Momma Marijuana will reward you handsomely!!
I would not mainline your first time out. I would top the plant so you can see how it multiplies the bud sites but no more than that. MAYBE low stress training if you're adventurous but, again, keep it simple. Shouldn't take that much longer than just letting her go.
As far as the 2 camps it really depends on you in how you want to approach it. I try and keep things simple by not adding a ton of different nutrients and amendments. I use an all in one grow and an all in one bloom. A few amendments and that's it. The rest, in my opinion, isn't really worth it unless you're growing commercially, like 1000 plants +. As far as the dome/no dome, transplant/don't transplant I say there are a million ways to skin a cat. Just use common sense and that should guide you through 90% of your choices. The other 10% can be answered here at the Farm!
One thing I will press is that, if you don't know, find out how basic plant biology works. It will also answer a lot of questions.