Most bass guitar players use their index and middle fingers on their right hand to pluck the strings of the bass guitar. You want to find a positive anchor on the body of your bass guitar to hold your thumb. Learning to play the bass guitar you will notice that it makes a big difference where you pluck your guitar strings. When you pluck your guitar strings closer to the bridge you get a very intense, clear sound. The bass guitar strings sound much more defined. When you pluck your bass guitar strings closer to the neck, it sounds much more mellow, not as intense. As you are learning to play the bass guitar, pay attention to these differences on your musical instrument.