Watch the The Palm Mute online guitar lesson by TrueFire from Play Acoustic Guitar 5: Fingerstyle Principles
The Palm Mute - Overview is a video guitar lesson presented by Tommy Emmanuel and is sourced from Fingerstyle Milestones.
In order to make the sound I'm looking for, which is boom chick boom chick, the way to do it is take a bit of the ringing out of the note with the palm of the hand. You rest it right on the string, on the saddle. Now, the fingers are doing nothing, they're staying out of the way. This is the very beginning, and it is so important for you to understand that. You might notice I'm striking that third string a bit as well, which is helping me to spell out what the chord is.