#1
Hey all, sorry if this is in the wrong section but I'm not sure where this goes. Anyway, when you have a tab like-
e|-/21---21-21--------------------------------|
B|-------------19---19-22---22----------------|
G|-----------------------------19-------------| x2
D|-----------------------------------14-14----|
A|-----------------------------------------14-|
E|--------------------------------------------|

The first note is /21, where are you sliding up from?

Thanx in advance
#2
It's just a general slide up, meaning that there's no real specific starting point. See what sounds good for you. I personally do a very fast slide as far across the neck as I can until I reach the desired note.