I guess it's this way in anything you do, but the show calf deal seems to have more than it's share of overnight experts. I agree that we all have something to learn, and it's only our own loss if we don't keep trying to learn. I also agree that you can't believe everything you hear.
That said, I still have these observations...
If you are just getting started and looking for advice, you really need to find someone that you trust and try to do it like they tell you. Nothing is more frustrating from the standpoint of being an ag teacher, 4H leader, or a breeder (or trader) who sold you a calf and is trying their best to help you than for you to do something totally opposite because someone you ran into in line at the concession stand or someone a thousand miles away on the internet told you to. Now please don't think I'm saying asking for advice here is bad - it's not, but if it's contrary to what someone who is close to you and is trying to help is telling you, discuss it with them before you do it. Maybe they can explain to you why they don't think it would work on your calf at this time, or maybe they'll agree it's worth trying. But nothing will sour someone on trying to help you quicker than your just ignoring their advice and being proud of it.