#1
i saw a tab that looks like this:

--------
--2------
---------
--3-----
--------
--------

i don't get how do you play this. Do i pick 2nd fret of that string and than 3rd fret of the other string if so thats not playing them in one strum. Do you mute the string in between? but the tab don't have an X there i don't get it.
#2
yup you've got it right. mute that middle string or you can pick both of the strings in a hybrid picking style if you wish.
bam!
#4
F-f-finger pick it. Depends on the song really.
ESP LTD MH-50
Martinez MPC-1C-NGL
Laney LV300H
#5
suggest a finger pick too.
you don't need to throw away a plectrum and play it with your two fingers, try to slap the 3 with your plectrum and the 2 with your middle finger.