#1
When sweep picking, are you supposed to lift your finger completely off the string when you are done on that string, or are you supposed to lift it enough to make the note stop?
#3
When hitting the second note, I lift my finger from the first note enough to mute it. When going to the 3rd note, I completely lift my finger from the first note, and lift from the 2nd just enough to mute, as I previously did. It's a rather mehcanical way to do it and it's just my personal preference. Unless you're doing something crazy, just lift enough to stop the note.