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 5^th or 17^th fret, for the root of C, you should start at the 8^th or 20^th fret, for the root of Eb, you should start at the 11^th fret: