F chord licks are based upon the alternative fingering for the root six major bar chord (see chord diagram). This fingering frees the 4th finger of the left hand, allowing this finger to fret the other notes based around the chord to create licks.
The root note of this chord shape is located on the 6th string which determines the name of the chord depending on which fret the chord shape is fretted. This chord shape is used for the F (1st fret) and the G chord (3rd fret) in the following example. For more information on Bar chords see Progressive Guitar Method: Bar Chords .