To talk about which fingers in the right hand to use we’re going to label them. This is a system that gets its roots in classical guitar. The letters are referring to Spanish words. It’s a system that’s been around for many years and seems to work well. Let’s go with it.
P – Thumb (Pulgar)
I – First or index finger (Indice)
M – Middle finger (Medio)
A – Ring finger (Anular)