BB,is right on track,iam gonna add something to it.start on the G string,5th fret.now hammer and pul off as fast as you can,starting with ur index finger,20 sec,then with no rest do the same middle finger,then ring,and pinky.ok now here is were the fun begins,repeat the process but now this time when ur hammering with ur index after 20 sec,u leave ur index down on the not,now u are fretting the first note,with ur index,and hammering with ur middle finger,now leave ur middle finger down,and hammer with ring finger,then leave ring finger down and hammer with pinky,.take this one slow ,and build speed.