Creating attractive PowerPoint presentations has never been easier with the availability of many beautiful built-in templates within PowerPoint. You can also apply several different types of visual enhancements within your presentation including your own pictures, stock pictures, clip art images, diagrams, charts and shapes. Within PowerPoint, these graphics are inserted as objects on a slide that can be sized, moved, copied and positioned as needed depending on the effect you are trying to achieve.
The first step in creating your presentation is to decide on your theme and then gather your assets (images, clipart) that you will be inserting. If you can’t find the appropriate pictures from your own sources, PowerPoint provides you access to thousands of professionally designed license free clip-art that you can download from the Microsoft website. Here you can search for illustrations, photos, animations and sounds that will enhance your presentation. Some of their most popular searches are flowers, borders, birthday, smile and books.
To insert ClipArt, (1) Click the Insert Tab >Images Group > Clip Art button on the Ribbon. The ClipArt pane will appear. If you need to find photos or clipart, you can then click the (2) “Find More at Office.com” link located at the bottom of the Clipart pane. This will take you to the Microsoft website where you can search for and download images to your heart’s content. 
If you’d like to practice this lesson, there is a PowerPoint tutorial and video tutorial below. You can view the PowerPoint tutorial and work along with me or watch the video tutorial and work along with me or you can also just sit back listen, watch and enjoy. This lesson is demonstrated in PowerPoint 2010 but you can try it out in Microsoft Office 2007 or Microsoft Office 2010.
What you need: The Out and About PowerPoint Presentation and images (click link to download the zip files from officeskills.org and follow the instructions online to unzip the exercise files.)
View: PowerPoint Presentation on Inserting ClipArt Graphics
Watch: Video tutorial on Creating PowerPoint 2010 Presentations using Graphics