Toward Harmonic and Melodic

The following chart helps you go from minor scales to harmonic-minor and then to melodic-minor ones or from major scales to melodic-minor and then to harmonic-minor ones (the red bullets show the difference between the new scale and the previous one):

The next table shows the correspondence between the root of the scale and the fret on the guitar where a certain scale should be played. For instance, if you want to play in the root of A, you should start at the 5th or 17th fret, for the root of C, you should start at the 8th or 20th fret, for the root of Eb, you should start at the 11th fret: