there is a good vid in about it.Basically the guy set the metronome at 160 and played quarter notes.Then he set the metronome at 80 and played 8th notes,then at 40bpm playing 16th, at 20 bpm 32nd and finally at 10 bpm 64th (16 notes per bit).Then he upped the challenge by adding 4/4 pauses at the metronome loop.I used guitar pro to write some loops.It helped quite a bit.Hope it helps