The fingers on both hands are assigned numbers for ease of communication when learning a piece of music.
T - thumb (the thumb isn’t ordinarily used in the fretting hand, so it doesn't receive a number)
1 - Index
2 - Middle
3 - Ring
4 - Pinky
(LINK) For more, refer to Evan Taucher’s Pickup Master Class: https://pickupmusic.com/learn/evan-taucher/
The numbers assigned to fretting- and picking-hand fingers
Written by Sam Blakelock
Updated over a week ago