Are you a pro or weekend warrior

I have been a member a long time. I have on occasion given advice that turned out to be wrong. This thread is for everyone to toot their whistle. If youre a pro tell us your experience. If you are knowledgeable tell us how and why. if youre shade tree like me admit it. This will help new members judge whos advice is best or most credible. thanks, ok strut your stuff!