Watch the Play-along #3 online guitar lesson by Stu Hamm from Stu Hamm U: Slap Bass
This segment is all about the muting. We will explore a few of the different ways that you can use your right hand in different ways to mute the strings and get a wide variety of tones.
I will play, then stop and leave room for you to try it out yourself. This back and forth approach should really help you understand the concepts and show you how to use them in a real life (musical) situation.