Vhs C System Why Do Musical Notes Go E B G C A E (yknow What I Mean)?

Why do musical notes go E B G C A E (yknow what I mean)? - vhs c system

I began to learn everything, but all share one miystery I do not know what its all about. I'm trying to learn the guitar, but says this guy did, we use the first 6 letters alpherbet but we have 2 E, and as far as I can tell, the ****** in the end all? is our current system of musical sound, the only thing we have? Is there a better way to learn and read music? Is it like VHS and stayed with him now?