Short cuts to learning are always fun, and tempting. There are some people who believe you shouldnt begin learning a song, until you master all the fundamentals, proper picking technique (guitar), proper knowledge of music theory, scales, learning how to sight read music. And the goal of a music teacher on any instrument USED to be ensuring that the student doesnt develope bad habits along the way, habits that will impede your progress at some point, if you want to get really good at it. If you're constantly playing a chord with the wrong fingering, it will make doing something more complex harder, or even impossible later on.

Im not a serious student of guitar, ive taken tons of short cuts, and that's probably why im not a professional player. I think I could have been had I been more dilligent and practiced more. I had a natural feel for blues, but didnt study it enough.

Plus its a bit like the game telephone, hearing the message from many people as opposed to one teacher.

I like having youtube around, but I notice they people doing instruction, at least as far as how to play this song or that song, are wrong more than right.