The book is a tutorial about the folk (rembetiko) guitar. It contains many rhythmic and melodic exercises. Analytical theory chapter for the structure and melodic development of all of the greek scales and modes. Special chapter about the construction of folk guitar written by the luthier Tasos Theodorakis. Over 100 music sheets, representative for each scale, which I have adapted it for 2,3 or 4 guitars, with tablatures and suggested fingering for each one. A separate chapter for the special fingerstyle technique of rembetiko guitar. Detailed chapters about the arpegios of threevoice and halfdiminished chords. Fingering for all the greek modes, from every root note, in one and two octaves.