For a cool screaming sound with relatively very high pitch , I recomend harmonics (natural ,tap) , and mess around with the FR .

For the metronome , do you know how to divide rhtyhms ?
the whole note, 8th, 16th , etc ?
This is how to play along with the metronome , each beat form the metronome is a quarter note , so if you're playing 16th notes , that would be 4 notes per metronome beat.