Here are the PowerPoint Drawing toolbar icons and its function:

Draw	Enables you to apply different adjustments to the objects that you draw.
Select Objects	Enables you to select a particular drawing object. For selecting multiple objects, keep the Shift key depressed.
AutoShapes	Click on the AutoShapes icon to bring up a list of shape menus. Drag the mouse on to a selected set of shapes and select one from the list.
Line	Used to draw a line. To draw perfectly horizontal or vertical line, depress the Shift key while dragging.
Arrow	Used to draw a line with an arrowhead on it.
Rectangle	Used to draw a rectangle. To draw perfect square, depress the Shift key while dragging.
Oval	Used to draw an oval. To draw perfect circle, depress the Shift key while dragging.
Text Box	Used to draw a text box into which you can enter text.
Vertical Text Box	Used to draw a vertical text box into which you can enter the text vertically.
Insert WordArt	Used to insert different pattern of WordArt to your presentation.
Insert Diagram or Organization Chart	Used to insert diagram or organization chart.
Insert Clip Art	Used to insert clip art.
Insert Picture	Used to insert picture from the location that you specify.
Fill Color	Used to fill a drawing object with a color or shading.
Line Color	Used to define the line color of a drawing object.
Font Color	Used to formats the selected text with the color you pick.
Line Style	Used to define the line style used by an object.
Dash Style	Used to define the dashed line style used by an object.
Arrow Style	Used to define the arrow line style.
Shadow Style	Click the shadow style you want for the selected object.
3-D Style	Click the 3D style you want for the selected object.

To add an AutoShape

To draw a line

To draw an arrow head

To draw a rectangles

To draw an ovals

To create a text box

To create a vertical text box

To create a WordArt object

To create a Diagram or Organization Chart

To insert a clipart

To insert a picture