#1
can some one explain to me how i would play a lick like the fast descending scale run in ride the lightning


do i barre anything, because when i try to switch strings fast...its a nightmare
#3
Usually you finger the Pentatonic scales with only your 1st, 3rd and 4th finger, if you're using more than those 3 then I can see why it would get a little tricky. I could be wrong though, if you are using the 1st 3rd and 4th and you are still having some trouble the only advise I have is just practice small diatonic patterns , like say an Aminor Pentatonic

--------------------------------------------------------
--------------------------------------------------------
--------------------------------------------------------
------------------5-----------------------5------------
-------5----5-7----7-5---------5--5-7---7-5-------
--5-8----8--------------8-5-8---8-------------8-5--

Idk something along those lines
hope that helps