Let me say this Feyth. Welcome to our community.
However, as in all communities there are societal rules of conduct. If one finds a five year old thread one doesn't treat it as if it is a few hours old. You might start off with something along the lines of "I know this is a very old thread, but I have a question". That would make necro-ing acceptable. You also necro'd in another thread that was three years old. Normally when a new member starts necro-ing it usually means they are trying to inflate their post count quickly. Fortunately I don't see that here, so it is figured that you just aren't quite up to speed yet.
When the established members call you out your poor form it is not trolling. But your skin will need to be a bit thicker. This board is filled with absolute experts in every field who are not afraid to give their opinion. When you put yourself out there expect feedback, good, bad, or indifferent. It also means that on these boards you will never ever be the top expert in any given subject, there is always someone who knows more.
This board is also filled with some of the kindest and most generous humans on the planet who take care of their own. That doesn't mean everything is free, but help is always a few clicks away on any subject known to man. They are not afraid to disagree, sometimes quite vociferously. I have disagreed with someone in one thread and lauded them in another.
I know only a half dozen people on this board personally, but I consider many of these people part of an extended family. I, and a great many others, have donated money, time, or tangible property to those we have never met outside of the boards simply because of the nature of this great big family.
Again, welcome to this odd family. Find a comfy place to sit and bask in the wealth of info this place offers but always remember to keep the elbows off of the table when eating.