#1
Yes...

so if i was to play
-------------------------12
---------------------12
-----------------13
14-14-14-14


that roll thing everywhere tells me to do on the 2 12th fret notes.... can we please go into deeper explanation?
#2
not necessarly a roll of the finger just kinda called that

its more like you roll your hand around the neck so you hit all the notes realy if you just practice the tabs over and over it will start to feel natural
MY BUDDY---DUDE YOU DONT NEED TO BE GOOD AT PLAYING GUITAR YOU JUST HAVE TO LOOK GOOD

ME----(PUNCH HIM TILL HE CRIES
#3
You would basically have the tip of your finger on the first of the twelves and then 'roll' your finger onto the flat part.
You keep your finger on the fretboard and quite literally roll you finger vertically,
It takes a lot of practice to get it clean but keep at it and you'll find it an incredibly useful technique.
Hope I helped, take it easy
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