Maybe it's because of me that I do not start on the forum
Every board you look at read the pinned posts at the top which usually have some rules and FAQ. Then just take your time reading around - you don't HAVE to post anything at all but sooner or later you'll see something which you can add to with facts, opinions or questions!
Im a total newbie and always learning on here, it's a great resource and good to be a part of it, as long as you play by the rules (and never, ever quote anyone without crediting the quote source/hyperlink!).