I came on here out of curiosity, not knowing much about Youtube.. I found a wealth of information. I have made friends all over the world. I have gone to see artists who I would never have known about if not for Youtube.
One of the best instructors here is. .Blindboy (deltabluestips) (he's a little eccentric, ok a lot).but great blues techniques. Also try Littlebrotherblues. Excellent player and very personable..For traditional American folk, Patrick @ Dobro33H.and his patented "Well how yah doin today folks?" For Neil Young, try GilsMusic. For slide guitar try KeniLeeBurgess. Great guitar techniques and song from siggi5153 and JustinSandercoe. . Here is some great entertainment straight out Frettkillr and one of my new personal favorites effronwhite I am hoping that if your interests are similar to mine, then maybe some of these links will be useful to you.

Think Green or Keep the Faith. Whatever floats your boat