Path
What to study before Fretboard geography
A six-string chromatic ruler, where the same note appears in several places and every shape transposes. Below, the concepts that come before, in the order in which one explains the next. Signed in, you see the same path minus what you already hold: your path.
Notes and semitones
The seven letter names, the accidentals that alter them, and the semitone as the system's smallest step.
Intervals
The distance between two notes, measured by a number taken from the letter names and a quality taken from the semitones.
Fretboard geography
A six-string chromatic ruler, where the same note appears in several places and every shape transposes.