Brushes are automatic graphic achievers in photoshop. They have the ability to images of abstracts and work throughout the line of objects.The work superbly when used creatively in a piece of work to give an artistic taste.As an art tool brushes come in many categories and there are even graffiti ones that develop sense of handwork in a graphic.
I used some basic brushes in designing the image below.
To download brushes visit the site www.brusheezy.com