Practice
How to use and practise it
Learn the position nearest the nut first, then one three-notes-per-string position, playing it up and down with the metronome. Then improvise over the I, IV and V chords of the key, ending your phrases on the root.
Same notes, another root: D♯ natural minor. The shapes on the neck are the same; only the note you start and end on changes.
The natural minor lowers the 3rd, 6th and 7th degrees: same shapes, darker sound. Compare the two: F♯ natural minor.
Set the tempo low, play each position up and down with the button above, then try it yourself at the same speed. Raise the tempo by 4 BPM only when it is clean.