#1
I've seen a few xx on different tabs and I was wondering. What does that mean? And also the x one too?
#2
It means mute the note.
Usually just cover up the string specified to mute and do not press hard enough to sound the note, but so you get a click sound.
Also, make sure no harmonic tones are present when you mute.
#3
they are a muted note. well not realy a note, its just a percussion noise.

lightly rest your fingers on the strings with your freting hand and and strike the said strings.
#5
Please see the FAQ first if you come across any other symbols you don't recognise.
Quote by Mia (Pulp Fiction)
Why do we feel it's necessary to yak about bullsh*t in order to be comfortable?

That's when you know you found somebody special. When you can just shut the f*ck up for a minute, and comfortably share silence.

RateYourMusic