0 means open string, 1 means first fret, 2 means second fret, and so on. Also, tabs are read from left to right.
Moreover, how do you play down to zero on guitar?
Regarding this, how do you play ghost notes on guitar? Put simply, a ghost note is a percussive hit on the guitar with no pitch. So, when you mute the strings with your fretting hand, and strike them with the plectrum, that is a ghost note.
Beside above, what does o mean in guitar chords?
open string