Practice
How to use and practise it
Start with Position 1, root under the index finger on the low E string, and play it over a minor chord drone. Resolve phrases on the root, the minor third and the fifth.
Same notes, another root: D♭ major. The shapes on the neck are the same; only the note you start and end on changes.
The harmonic minor raises the 7th degree by a half step, which gives the scale a stronger pull back to the root. Compare the two: B♭ harmonic 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.