Grunge brushes are useful for a variety of applications but do you know how to make them? http://great-design.blogspot.com/2007/07/creating-grunge-photoshop-bru...
This tutorial covers everything there is to know about the Photoshop Brushes. You will learn how to make a brush and much more! http://tutorials.startphotoshop.com/BrushupBrushes.html
This Photoshop tutorial walks you through the process of making custom brushes. http://altered-perspective.com/2007/10/13/custom-photoshop-brushes-tut...
This tutorial is meant for beginners and those who have never made their own brushes. http://www.photoshoptalent.com/photoshop-tutorials/brush-creation-for-...
How to make custom photoshop brushes: Quick and Easy. All you need is picture wich you want to use as brush. http://www.tu-world.com/photoshop/photoshop_tutorial_13.php
This photoshop tutorial will teach you about making brushes, using brushes and import them easily to Adobe photoshop http://www.tutorialshot.com/photoshop-brushes-usage-create-and-import/