 So you don't understand mesh to brush, not a problem. This just turns whatever you click into a brush. If you're on aligned orientation, it aligns the mesh based on your camera. If target is set to align to face normal, it aligns the mesh based on the face you click. How you align the mesh determines the default values of your brush. The reason why you want to face the front most of the time is so it will be perfectly flat when you need it to be. If you create a brush when it's not aligned, you're gonna have a lot of trouble whenever you need something to be perfectly flat or perfectly straight. Hope that helps Santa as always. Hope you have a fantastic day and now see you around.