Illustrator is a vector graphic editor that can be used to create illustrations, logos, and other graphics. To use Illustrator, you first need to install the software. Once you have installed Illustrator, open it and click on the File menu and select New File. In the New File dialog, enter a name for your new file and click on the OK button. Next, open your existing Illustrator file and select the Brushes tab in the left-hand panel of the Editor window. In this tab, you will find a list of all of Illustrator’s brushes. To use a brush, simply drag it onto an object or canvas in your drawing or painting session. Once you have dragged a brush onto an object or canvas, select it from the Brushes tab and click on its icon to start using it.