Learn Guitar The Right Way

What is the correct way to reduce a major chord on guitar?

I was learning the guitar for a few months now and I wondered if there is a "correct" a freight train R. I used to try fretting with my first three fingers, but do not fit into a box and I was getting a lot of rumors, so now I just cross my finger. I wanted to know if this way is bad or not, since he can not really leave your first string, if the bar. (I would like responses from some experienced guitarists)

That's how I've always played. It's easier for me to play and to change in and out quickly. Practice a lot. You can play and let the open E ring. I do it all the time.

(Guitar Solo) Cum On Feel The Noize – Quiet Riot