Very nice find. I live above East Bernstadt. I did not know those tunnels were there, nor the old tunnel. It is good to explore and document things. You never know when it may prove useful in the future. i encourage you to keep doing what you are doing, what you enjoy and love. And don't worry about being new to youtube. It is very simple, just do it. As you keep youtube-ing, you'll find yourself, and honestly, you'll probably do some changing of your approaches along the way; but you'll have your comfort zone soon, if you do not already have it. Just be you and do what you know. Just have fun and enjoy your time. That is the number one idea. Just be you.
There is another active tunnel near Mullens Station Rd off us 25 between Mt Vernon and Livingston, and an abandoned tunnel behind the rock quarry if you follow the Roundstone downstream for about half a mile. If you like tunnels you could also check the Dawkins Rail Trail in Magoffin County. Good place to go for a walk or bike ride. There are two tunnels on that rail trail