Instrumenet	Introduction	Strings	Courses	Tuning
Lute	1300 BCE
Lute		15	8
Lute	1500 CE	6	6	G–c–f–a–d′–g′,
Guitar	1200 CE	6	6	E, A, D, G, B, E
Mandolin	__	8	4	G3 D4 A4 E5
Violin	__	4	4	G3 D4 A4 E5
Ukulele	__	4	4	G4 C4 E4 A4

Position markers are visual aids to help locate your fingers without counting frets.

Links:
Beginner Ukulele in products.