Ok, so you will get the occasional crusty old fart who will point out the "stickied" threads (at the top of the forums highlighted in blue with the word "sticky" out to the left). And, yeah, ok. Those threads do tend to have some pretty good info in them. But, they don't do you much good if you don't realize they are there! And I swear to God, it's just about requisite to be an "old hand" before spotting them.
But, for the most part, most posters don't mind recovering "old ground." Or at least shouldn't, since I know I've rediscovered some things I'd sort of glazed on while pointing something out to someone else. And even the ones who post links to threads where the problem has been discussed before are typically well meaning (just too old and arthritic to retype everything again).
And it's important to remember that everyone was a newbie at some point. (Well, except for maybe Ogg. Not sure, but I think he carved his first story in stone tablets. But, other than him.
Love ya, Ogg-man!)
Any road, yeah. Don't hesitate to ask around. It's actually pretty amazing what this disparate motley crew of fools knows between them. And above all, "just write."