Technique Documents (Free Downloads | Gumroad) The technique documents listed are designed by Robert Guthrie (1943-2023) (International Concert Artist | Professor of Classical Guitar Studies – Southern Methodist University – 1973-2022). Robert Guthrie | An Honorary Tribute Technique Study & Development Study Concepts Study Plans Free Download | Gumroad Free Download | Gumroad Right-Hand Concepts Left-Hand Concepts Free Download | Gumroad Free Download | Gumroad Arpeggio Exercises Seven Basic Arpeggios (Jazz-Style Chords) Eight Basic Arpeggios Free Download | Gumroad Free Download | Gumroad Seven Basic Arpeggios (C & G7 Chords) Seven Basic Arpeggios (Double-Thumb Strokes) Free Download | Gumroad Free Download | Gumroad Advanced Arpeggios Free Download | Gumroad Various Technique-Building Exercises String-Crossing Exercises Chromatic Octaves & Legato Exercises Free Download | Gumroad Free Download | Gumroad Coordination & Scale Exercises Diminished Scale, Coordination, & Slurs Free Download | Gumroad Free Download | Gumroad