#3
first what do you know about theory? (this is probably the most important part, for it will help you understand why it sounds that way and there fore help you create a sound similar to it....)

have you figured out what exactly he's playing? analyze that and the overall chord progression.

listen to more songs in that style, and try to analyze those.

learn to play songs in that style.

^^if you haven't done all of those things then do them, it will help you a hell of alot more than asking anyone here for a how to....
Quote by Dirk Gently
Some pieces are only meant to be played by people with six fingers on their fretting hand. Sorry.
#4
basically just get a delay in your signalchain and set it to 8ths and play a melodyline to get the feel of a tone with fast delay...the rest will come by messing around with different chords