Welcome to the forum, Mark! Glad to have you.
My first suggestion is to read the FAQs that are stickied at the top of this forum. That should answer a great many of your questions.
Secondly, try to attend some OC meets in your area. You'll see those on here on a fairly regular basis. We have them around the Puget Sound area about 3 weekends a month. AND if there isn't one in your area, you can always do it yourself. Just post a date, time, and place. Most likely, SOMEONE will show up.
Thirdly, don't take the people on here too seriously. Most of us know what we're talking about most of the time, BUT we all get it wrong from time to time.
Fourth, if you quote a law/rule/regulation, etc always cite your sources. If you don't remember the source, say so. Maybe someone else will be able to find it or remember it. Never state opinion as fact on here. People will pin your ears back for you.
Now, have fun!